The one about useless body parts...

A man has 27 parts that don't work for him:

20 nails that don't nail

1 belly button that doesn't button

2 tits that don't milk

1 cock that doesn't crow

2 balls that don't bounce

1 ass that doesn't do any work

Hmmm... but maybe women shouldn't laugh too hard...

They have a pussy that doesn't catch mice!