Star of Jackass Bam Margera is no stranger to being knocked out but this time it was by someone fist.
TMZ broke the story saying that Bam was at the Secret Solstice Festival in Iceland and he said that he was attacked by one of the people that run the festival.
On the other side the spokesman said Bam was acting very ass like heckling people and that was when he caught a fist to the face.
Here is the video that TMZ got there hands on of Bam going lights out:
Bam is no stranger to being knocked around as you can see from some clips here of him in the Jackass series: