to have a homeless man help you masturbate, and during your climax said homeless man takes a shit on your chest
Bill: "OMFG!!! that johnstown jackoff was the best"
Jerry: "ya thank god he was a semi-clean homeless man"
Jerry: "ya thank god he was a semi-clean homeless man"
by The Pi Guy17 September 26, 2009
Get the Johnstown Jackoff mug.To jerk off with a hair gel/ hairspray mix and try to ejaculate while attempting to Growing up Gotti up your pubes.
Man, I got so bored the other night that when my girl left for work, I preformed the great Johnston Jackoff Challenge.
by Johnnie Walker's Chauffer December 26, 2008
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