Top Definition
The final (of four or five) tension of the pelvic muscles during a male's orgasm resulting in a small amount of cum to emerge from the head of the penis. When a man orgasms, semen is released in a series of muscle tensions. The final tension in which the last of the semen is released is a guffie.
Okay baby, I'm finished. That last one was a guffie.
by Glider Rider June 21, 2007

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