One is weasely identifiable while the other is stoatally different.
3, duh. (My ex's 9 year old little sister told me this joke, and followed is up with: "and YOU'RE the math guy!" >< Burned.)
The pool doesn't scream when you go in dry.
It raises a stink!
Oh don't worry, they'll tell you.
One's weasily recognised - the other's stoatally different
Pop,goes the weasel.