20-Classic-Knock-Knock-Jokes-Photo4

 4. The Speech Impediment Knock Knock

Knock, knock.
Who’s there?
Dwayne.
Dwayne who?
Dwayne the bathtub, It’s overflowing!

Admit it, you love this one! There is a more macabre variation in which the response is, “Dwayne the tub, I’m dwowning!” but we’re not crazy about that version.