Johnny Knoxville Sued For Emotional Distress Over Home Prank

Johnny Knoxville is known for his elaborate pranks, but his latest may have gone too far ... resulting in a lawsuit from a guy who says it caused him emotional distress.

According to legal docs, obtained by TMZ, the 'Jackass' star is being sued by Khalil Khan over a home prank. Khan says he was hired to do a routine repair job through TaskRabbit but ended up getting way more than he bargained for.

According to the lawsuit, obtained by TMZ, Khan says was hired to a home to repair an electric dimmer switch. He claims the owner of the house was an actor in on the prank.

Khan claims within moments of starting the work, a lamp went out and a girl about the age of 10 -- who was also apparently an actor -- accused him of killing her pony because it was on life support and died when the electricity went out.

At one point, Khan says he was led into a room where there appeared to be an actual pony. He says things got worse when he saw his car getting towed. Khan claims when he started to call the cops, one of the men who'd taken his car said he'd get in trouble for having cocaine in it ... and he says the guy even pulled out a bag of white powder. Khan says he was horrified and denied knowing anything about it.

He says Johnny, who is known for pulling stunts, eventually let Khalil in on the prank ... expressing that it was all done in good fun, offering him money for his participation.