go up to a random foreigner and act gay!!
shouldn't be hard!!
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Get a cactus any size will do and sit on it with your bare Ass.
Tosh.0 had this challenge the other night and i almost died. If i had a penis i would so try this.. guys pleasee do this CHECK IT OUT.. http://tosh.comedycentral.com/video-clips/gay-porn-viagra-boner-challenge