BOO

Justin Bieber Got Booed by the Crowd at the Clippers Game Yesterday (Video)

Justin Bieber Got Booed by the Crowd at the Clippers Game Yesterday (Video)

His mom was there to hear it.

David Stern Really, Really Enjoyed Getting Booed at the 2013 NBA Draft Last Night (Video)

David Stern Really, Really Enjoyed Getting Booed at the 2013 NBA Draft Last Night (Video)

Booooooooooooo!

The 10 Most Famous Animals on the Internet

The 10 Most Famous Animals on the Internet

They're kind of like a big deal.

Video: The Boos Meet a Real Ghost

Video: The Boos Meet a Real Ghost

The boo squad brings in a ringer to take down Mario...