Bill O'Reilly.

Whether he's trying to insert himself into the Miley Cyrus topless pic debate, calling out Snoop Dogg or letting Hillary Clinton chop his nuts off interviewing Hillary Clinton on national TV, this "no spin" journalist sparks controversy.

In case you haven't noticed, Bill O'Reilly can get pretty fired up.

Still, this behind-the-scenes clip from Bill's days as host of Inside Edition is shocking even for him. Apparently someone was screwing up on the teleprompter. Bill goes through several takes, then absolutely flips the f*%k out.

WARNING: Hilarious, scary clip of temperamental ass clown contains profanity.