1. American Version - A sexual act wherein the male is penetrating the female anus causing an orgasm in the female. The female, preferably a squirter, will then projectile ejaculate causing her vagina to look like a sweaty neighbor to the anus.

2. British Version - A sexual act involving 2 females and 1 male wherein the females are in position 69 and the male is penetrating either girls anus causing an orgasm in the female. The female, preferably a squirter, will then projectile ejaculate on the girls face who is between her legs causing her to look like a sweaty neighbor.

3. Alcohol Version - The Sweaty Neighbor is also a name for the alcoholic mixture of beer and wine: preferably a budweiser can would be half emptied (by consumption only) and the remaining space would be filled with white wine. This combination is hereby known as The Sweaty Neighbor.
1. American Version - "Yo, I was fucking this chick in the ass and she squirted all over the place and her sweaty neighbor was dripping like a fountain!"

2. British Version - "Bloody Hell! My flatmate Sheila and I were bandied up with another fit bird and I was buggering her as Sheila ate at her exquisite naff when all of a sudden she went off and poofed all over Sheila's face. My flatmate was left looking like the sweaty neighbour."

3. Alcohol Version - "Oh man, I think I was drinking Sweaty Neighbors that night that I threw up spaghetti all over your mom's dress."
by Brec S. and Erin Q. May 29, 2008
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