Top definition
when a female (or if you're gay, a male), while performing oral sex on a male, deep throat's a penis, and makes that "guff" sound as they gag...
Hey Ally, are you guffin? Damn, that bitch can guff! Troy's guffin mad dudes...
by Jakson Chazzz October 18, 2007
Get the mug
Get a guffin mug for your buddy Sarah.