On the Stern show they had Steve-O and Johnny Knoxville on, and Howard was taking about a new movie diea of his called "Jerk-Off: the movie" which would be stern fans doing jackass-type stunts. A couple people called in and said they would be willing to be stabbed or even killed (!) as the finale of the movie
Then there is this article:
"Jackass" goers turn into Jackasses