Justin Bieber/Funny

Remember how your grandpa always is/would be calling him "Jason Booby"?
When people mishear you and call him "Justine Bieber".
- This troper's math teacher calls him that on purpose.
When people mishear you and call him Justin Beaver.
Him getting hit in the head with a water bottle.
That Funny or Die video.

Justin: Sometimes I don't feel like walking, so I make enormous people carry me around.

Justin: I tried to go into a nightclub once, but the security guards were like "Excuse me, sir, you're not old enough." So I bought the club and I turned it into a Chuck E. Cheese. Now who's old enough, bitch?

The ad he did with Ozzy, complete with him saying at the very end, "Huh, he kind of sounds like a girl."
The fatherhood allegations. Not them in and of themselves, but the fact that if they were ever proved, the mother would be thrown in jail for statutory rape. If she's proven false, she'll be thrown in jail for perjury. Ah, the law, thou art the funniest institution.
He walked into a glass door, got up, smiled, then walked into the same door again.
Bieber started an open poll for which country he should tour in next. 4chan noticed it, and the next thing everyone knew, the leading country was North Korea.
The Bieber or Die self-deprecation.
"Oma-ha mall... Oma-ha mall..."