diff --git a/t/lib/Mo/handles.t b/t/lib/Mo/handles.t
index e8f74ccc..653c396f 100644
--- a/t/lib/Mo/handles.t
+++ b/t/lib/Mo/handles.t
@@ -185,9 +185,9 @@ is($car->stop, 'Engine::stop', '... got the right value from ->stop');
     can_ok($baz_proxy, 'bar');
     can_ok($baz_proxy, 'boo');
 
-    is($baz_proxy->foo, 'Baz::foo', '... got the right proxied return value');
-    is($baz_proxy->bar, 'Baz::bar', '... got the right proxied return value');
-    is($baz_proxy->boo, 'Baz::boo', '... got the right proxied return value');
+    is($baz_proxy->foo, 'Baz::foo', '... ->foo got the right proxied return value');
+    is($baz_proxy->bar, 'Baz::bar', '... ->bar got the right proxied return value');
+    is($baz_proxy->boo, 'Baz::boo', '... ->boo got the right proxied return value');
 }
 {
     my $baz_proxy = Baz::Proxy2->new;
@@ -199,8 +199,8 @@ is($car->stop, 'Engine::stop', '... got the right value from ->stop');
     can_ok($baz_proxy, 'foo');
     can_ok($baz_proxy, 'boo');
 
-    is($baz_proxy->foo, 'Baz::foo', '... got the right proxied return value');
-    is($baz_proxy->boo, 'Baz::boo', '... got the right proxied return value');
+    is($baz_proxy->foo, 'Baz::foo', '... ->foo got the right proxied return value');
+    is($baz_proxy->boo, 'Baz::boo', '... ->boo got the right proxied return value');
 }
 {
     my $baz_proxy = Baz::Proxy3->new;
@@ -212,8 +212,8 @@ is($car->stop, 'Engine::stop', '... got the right value from ->stop');
     can_ok($baz_proxy, 'bar');
     can_ok($baz_proxy, 'boo');
 
-    is($baz_proxy->bar, 'Baz::bar', '... got the right proxied return value');
-    is($baz_proxy->boo, 'Baz::boo', '... got the right proxied return value');
+    is($baz_proxy->bar, 'Baz::bar', '... ->bar got the right proxied return value');
+    is($baz_proxy->boo, 'Baz::boo', '... ->boo got the right proxied return value');
 }
 
 # -------------------------------------------------------------------
@@ -349,8 +349,8 @@ is($car->stop, 'Engine::stop', '... got the right value from ->stop');
 
     # and make sure the delegation picks it up
 
-    is($bar->foo->bar, 30, '... bar->foo->bar returned the right (changed) value');
-    is($bar->foo_bar, 30, '... bar->foo_bar delegated correctly');
+    is($bar->foo->bar, 30, '... bar->foo->bar returned the value changed by ->foo->bar()');
+    is($bar->foo_bar, 30, '... bar->foo_bar getter delegated correctly');
 
     # change the value through the delegation ...
 
@@ -358,8 +358,8 @@ is($car->stop, 'Engine::stop', '... got the right value from ->stop');
 
     # and make sure everyone sees it
 
-    is($bar->foo->bar, 50, '... bar->foo->bar returned the right (changed) value');
-    is($bar->foo_bar, 50, '... bar->foo_bar delegated correctly');
+    is($bar->foo->bar, 50, '... bar->foo->bar returned the value changed by ->foo_bar()');
+    is($bar->foo_bar, 50, '... bar->foo_bar getter delegated correctly');
 
     # change the object we are delegating too
 
@@ -432,12 +432,12 @@ is($car->stop, 'Engine::stop', '... got the right value from ->stop');
     my $i = Bar->new(foo => undef);
     local $@;
     eval { $i->foo_bar };
-    like($@, qr/is not defined/, 'useful error from unblessed reference' );
+    like($@, qr/is not defined/, 'useful error if delegating from undef' );
 
     my $j = Bar->new(foo => []);
     local $@;
     eval { $j->foo_bar };
-    like($@, qr/is not an object \(got 'ARRAY/, 'useful error from unblessed reference' );
+    like($@, qr/is not an object \(got 'ARRAY/, '... or from an unblessed reference' );
 
     my $k = Bar->new(foo => "Foo");
     local $@;
diff --git a/t/lib/Mo/isa.t b/t/lib/Mo/isa.t
index e6a56e8f..39e4e19c 100644
--- a/t/lib/Mo/isa.t
+++ b/t/lib/Mo/isa.t
@@ -40,67 +40,129 @@ package main;
 my $foo = Foo::isa->new( myStr => "abcdefg" );
 
 # Bool:
-lives_ok { ok !$foo->myBool(undef) } "Bool attr set to undef";
-lives_ok { is $foo->myBool(1), 1 }   "Bool attr set to 1";
+lives_ok {
+   ok !defined($foo->myBool(undef)),
+      "myBool set to undef"
+} "Bool attr set to undef";
+lives_ok {
+   is $foo->myBool(1), 1,
+      "myBool set to 1"
+}   "Bool attr set to 1";
 is $foo->myBool, 1, "new value of \$foo->myBool as expected";
-lives_ok { is $foo->myBool(1e0), 1 } "Bool attr set to 1e0";
+lives_ok {
+   is $foo->myBool(1e0), 1,
+      "myBool set to 1e0 becomes 1"
+} "Bool attr set to 1e0";
 dies_ok { $foo->myBool("1f0") }       "Bool attr set to 1f0 dies";
-lives_ok { is $foo->myBool(""), "" } "Bool attr set to empty string";
+lives_ok {
+   is $foo->myBool(""), "",
+      "myBool set to an emptry string"
+} "Bool attr set to empty string";
 is $foo->myBool, "", "new value of \$foo->myBool as expected";
-lives_ok { is $foo->myBool(0), 0 }   "Bool attr set to 0";
-lives_ok { is $foo->myBool(0.0), 0 } "Bool attr set to 0.0";
-lives_ok { is $foo->myBool(0e0), 0 } "Bool attr set to 0e0";
+lives_ok {
+   is $foo->myBool(0), 0,
+      "myBool set to 0"
+}   "Bool attr set to 0";
+lives_ok {
+   is $foo->myBool(0.0), 0,
+      "myBool set to 0.0 becomes 0"
+} "Bool attr set to 0.0";
+lives_ok {
+   is $foo->myBool(0e0), 0,
+      "myBool set to 0e0 becomes 0"
+} "Bool attr set to 0e0";
 dies_ok { $foo->myBool("0.0") }       "Bool attr set to stringy 0.0 dies";
 
 # Bool tests from Mouse:
 open(my $FH, "<", $0) or die "Could not open $0 for the test";
-my $msg = q(Bool rejects anything which is not a 1 or 0 or "" or undef");
-lives_ok { $foo->myBool(0) }              $msg;
-lives_ok { $foo->myBool(1) }              $msg;
-dies_ok { $foo->myBool(100) }             $msg;
-lives_ok { $foo->myBool("") }             $msg;
-dies_ok { $foo->myBool("Foo") }           $msg;
-dies_ok { $foo->myBool([]) }              $msg;
-dies_ok { $foo->myBool({}) }              $msg;
-dies_ok { $foo->myBool(sub {}) }          $msg;
-dies_ok { $foo->myBool(\"") }             $msg;
-dies_ok { $foo->myBool(*STDIN) }          $msg;
-dies_ok { $foo->myBool(\*STDIN) }         $msg;
-dies_ok { $foo->myBool($FH) }             $msg;
-dies_ok { $foo->myBool(qr/../) }          $msg;
-dies_ok { $foo->myBool(bless {}, "Foo") } $msg;
-lives_ok { $foo->myBool(undef) }          $msg;
+# Bool rejects anything which is not a 1 or 0 or "" or undef:
+lives_ok { $foo->myBool(0) }              "Bool lives with 0";
+lives_ok { $foo->myBool(1) }              "Bool lives with 1";
+dies_ok { $foo->myBool(100) }             "Bool dies with 100";
+lives_ok { $foo->myBool("") }             "Bool lives with ''";
+dies_ok { $foo->myBool("Foo") }           "Bool dies with a string";
+dies_ok { $foo->myBool([]) }              "Bool dies with an arrayref";
+dies_ok { $foo->myBool({}) }              "Bool dies with a hashref";
+dies_ok { $foo->myBool(sub {}) }          "Bool dies with a coderef";
+dies_ok { $foo->myBool(\"") }             "Bool dies with a scalar ref";
+dies_ok { $foo->myBool(*STDIN) }          "Bool dies with a glob";
+dies_ok { $foo->myBool(\*STDIN) }         "Bool dies with a globref";
+dies_ok { $foo->myBool($FH) }             "Bool dies with a lexical filehandle";
+dies_ok { $foo->myBool(qr/../) }          "Bool dies with a regex";
+dies_ok { $foo->myBool(bless {}, "Foo") } "Bool dies with an object";
+lives_ok { $foo->myBool(undef) }          "Bool lives with undef";
 
 # Num:
-lives_ok { is $foo->myNum(5.5), 5.5 } "Num attr set to decimal";
+lives_ok {
+   is $foo->myNum(5.5),
+      5.5,
+      "myNum was set to 5.5"
+} "Num attr set to decimal";
 is $foo->myNum, 5.5, "new value of \$foo->myNum as expected";
-lives_ok { is $foo->myNum(5), 5 } "Num attr set to integer";
-lives_ok { is $foo->myNum(5e0), 5 } "Num attr set to 5e0";
+lives_ok {
+   is $foo->myNum(5),
+      5,
+      "myNum was set to 5"
+} "Num attr set to integer";
+lives_ok {
+   is $foo->myNum(5e0),
+      5,
+      "myNum was set to 5e0"
+} "Num attr set to 5e0";
 dies_ok { $foo->myBool("5f0") }       "Bool attr set to 5f0 dies";
-lives_ok { is $foo->myNum("5.5"), 5.5 } "Num attr set to stringy decimal";
+lives_ok {
+   is $foo->myNum("5.5"),
+      5.5,
+      "myNum was set to q<5.5>"
+} "Num attr set to stringy decimal";
 
 # Int:
-lives_ok { is $foo->myInt(0), 0 }   "Int attr set to 0";
-lives_ok { is $foo->myInt(1), 1 }   "Int attr set to 1";
-lives_ok { is $foo->myInt(1e0), 1 } "Int attr set to 1e0";
+lives_ok {
+   is $foo->myInt(0),
+      0,
+      "myInt was set to 0"
+}   "Int attr set to 0";
+lives_ok {
+   is $foo->myInt(1),
+      1,
+      "myInt was set to 1"
+}   "Int attr set to 1";
+lives_ok {
+   is $foo->myInt(1e0),
+      1,
+      "myInt was set to 1e0"
+} "Int attr set to 1e0";
 is $foo->myInt, 1, "new value of \$foo->myInt as expected";
 dies_ok { $foo->myInt("") } "Int attr set to empty string dies";
 dies_ok { $foo->myInt(5.5) } "Int attr set to decimal dies";
 
 # Str:
 is $foo->myStr, "abcdefg", "Str passed to constructor accepted";
-lives_ok { is $foo->myStr("hijklmn"), "hijklmn" } "Str attr set to a string";
+lives_ok {
+   is $foo->myStr("hijklmn"), "hijklmn",
+      "myStr was set to a string",
+} "Str attr set to a string";
 is $foo->myStr, "hijklmn", "new value of \$foo->myStr as expected";
-lives_ok { is $foo->myStr(5.5), 5.5 } "Str attr set to a decimal value";
+lives_ok {
+   is $foo->myStr(5.5), 5.5,
+      "myStr was set to 5.5"
+} "Str attr set to a decimal value";
 
 # Class instance:
-lives_ok { is $foo->myFoo($foo), $foo } "Class instance attr set to self";
+lives_ok {
+   is $foo->myFoo($foo), $foo,
+      "myFoo set to self"
+} "Class instance attr set to self";
 isa_ok $foo->myFoo, "Foo::isa", "new value of \$foo->myFoo as expected";
 dies_ok { $foo->myFoo({}) } "Class instance attr set to hash dies";
 
 # Class name:
 my $class = ref($foo);
-lives_ok { is $foo->myFoo($class), $class } "Class instance attr set to classname";
+lives_ok {
+   is $foo->myFoo($class),
+      $class,
+      "myFoo set to a classname"   
+} "Class instance attr set to classname";
 is $foo->myFoo, $class, "new value of \$foo->myFoo as expected";
 
 # Refs: