Knock, knock.
Who's there?
Lettuce in.
Lettuce in who?
Lettuce in, it's cold out here!
Lettuce In
Categories
Explanation
Experiment
Explain Bear
Hey, dummy! The joke is a play on words. "Lettuce in" sounds like "Let us in." It's funny 'cause it's so stupid. You probably think that's comedy gold, you troglodyte.