A fart that emerges during an orgasm, often heightening the experience for one of the partners. The only form of sexual climax that addresses all 5 senses. Usually the result of beer, Mexican food and total disrespect for women. Also known as the LawnMower in southern states.
Tommy, I had a flatul-gasm last night with Joey's filthy older sister. You could see, hear, touch, taste and smell it.
by Kevin m. Breunig February 03, 2009
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