Johnny Knoxville and much of his original MTV gang are back for the fourth installment of cinematic shenanigans, a side-splittingly funny ... dumb stunts, and the joys of being a jackass.

appears in a new preview video for the upcoming Jackass 4 where he gives a peek at some of the wild stunts to come. One of them involves him seemingly being paralyzed via an injection.

Margera, 45, and Hawk, 56, let loose on the vert ramp, recreating a moment from 2002's Jackass: The Movie, in which the two did the same moves while dressed in bubble-wrap padded, oversized outfits in ...