Knock Knock - Anthem

Knock Knock
Who's there?
Anthem!
Anthem who?
You Anthem devil you!

Slippery

Q: Why did the big moron fall off the roof and the little moron didn't?
A: Because he was a little more on.

Knock Knock - Remember

Bob: "Will you remember me tomorrow?" 
Bill: "Yes"
Bob "Will you remember me next week?" 
Bill  "Yes"
Bob: "Will you remember me next month??"
Bill: "Yes"
Bob: "Will you remember me next year?"
Bill: "Yeah"
Bob: "Knock Knock"
Bill: "Who's There?"
Bob: "See, you forgot me already!"