Top Definition
1 A jackass star that does painful and stupid things in an amazingly humorous way to make millions, he works with such legends as Chris Pontius, SteveO, and Ryan Dunn(rest in peace)
2 A marketing genius
guy "i just watched Jackass"
guy 2 "yeah Johnny Fucking Knoxville is great"
by JACKASS4EVER July 20, 2011

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