Jackass Smackdown

The Jackass boys are back and at it again.

Steve-O and Chris Pontius were surprise guests on "Monday Night Raw" on Monday and this time they were going up against some real competition. Instead of their usual crazy antics like playing with bulls, crashing cars and lighting themselves on fire they decide to mess with WWE's very own Umaga.

Can't get enough of Steve-O getting his butt whooped? "Monday Night Raw" airs tonight on USA.