Knock KnockWho's there?Clarence!Clarence who?Clarence sale! Knock KnockWho's there?Clarence!Clarence who?Clarence sale! - The Funniest Joke Knock KnockWho's there?Clarence!Clarence who?Clarence sale!. What are the best jokes you know that make others laugh in less that 20 seconds? Knock KnockWho's there?Clarence!Clarence who?Clarence sale!

Knock KnockWho's there?Clarence!Clarence who?Clarence sale!