Classic call-and-response style jokes that follow a set pattern.
Knock, knock. Who’s there? Tank. Tank who? You're welcome!
Knock, knock. Who’s there? Orange. Orange who? Orange you glad I didn't say banana?
Knock, knock. Who’s there? Lettuce. Lettuce who? Lettuce in, it's freezing out here!
Knock knock. Who’s there? Lettuce. Lettuce who? Lettuce in, it’s cold out here!
Knock knock. Who’s there? Cow says. Cow says who? No, cow says moooo!
Knock knock. Who’s there? Atch. Atch who? Bless you!