diff --git a/dirty_equals/_boolean.py b/dirty_equals/_boolean.py
index f3010b8..21f90be 100644
--- a/dirty_equals/_boolean.py
+++ b/dirty_equals/_boolean.py
@@ -7,7 +7,8 @@
 
 class IsFalseLike(DirtyEquals[B]):
     """
-    Check if the value is False like, and matches the given conditions.
+    Check if the value is False like. `IsFalseLike` allows comparison to anything and effectively uses
+    `return not bool(other)` (with string checks if `allow_strings=True` is set).
     """
 
     def __init__(
@@ -16,11 +17,16 @@ def __init__(
         allow_strings: Optional[bool] = None,
     ):
         """
+        Args:
+            allow_strings: if `True`, allow comparisons to False like strings
+
         Example of basic usage:
 
         ```py title="IsFalseLike"
         from dirty_equals import IsFalseLike
 
+        assert 'false' == IsFalseLike(allow_strings=True)
+        assert 'foobar' != IsFalseLike(allow_strings=True)
         assert False == IsFalseLike
         assert 0 == IsFalseLike
         assert '0' == IsFalseLike(allow_strings=True)
@@ -28,22 +34,16 @@ def __init__(
         assert [1] != IsFalseLike
         assert {} == IsFalseLike
         assert None == IsFalseLike
-        assert 'false' == IsFalseLike(allow_strings=True)
         ```
         """
         self.allow_strings: Optional[bool] = allow_strings
-        super().__init__(
-            allow_strings=allow_strings,
-        )
+        super().__init__(allow_strings=allow_strings)
 
     def equals(self, other: Any) -> bool:
-        if self.allow_strings:
+        if isinstance(other, str) and self.allow_strings:
             return self.make_string_check(other)
         return not bool(other)
 
     @staticmethod
     def make_string_check(other: str) -> bool:
-        if other.lower() in ('0', '0.0', 'false'):
-            return True
-        else:
-            return False
+        return other.lower() in {'0', '0.0', 'false'}
diff --git a/tests/test_boolean.py b/tests/test_boolean.py
index 65f863b..97f0bb1 100644
--- a/tests/test_boolean.py
+++ b/tests/test_boolean.py
@@ -34,9 +34,10 @@ class TestIsFalseLike:
     def test_dirty_equals(self, other, expected):
         assert other == expected
 
-    def test_dirty_not_equals(self, other, expected):
-        with pytest.raises(AssertionError):
-            assert other != expected
+
+def test_dirty_not_equals():
+    with pytest.raises(AssertionError):
+        assert 0 != IsFalseLike
 
 
 def test_invalid_initialization():