(n.)the act of, when receiving oral sex from a female (or in desperate times, a male), smacking the testicles against the chin of the individual performing oral sex.
Man, if Zach hadn't referenced the fourth-grade term "stiffy" at lunch today, I probably wouldn't have even remembered to give that bitch Karen M. a stiffleball tonight. The tingling feeling provided by her hairy chin rubbing against my balls was quite a sublime experience.
by Ron Mexico April 16, 2005

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