Slapback

–noun
(slap-bak)

Both an auditory and tactile phenomena that occurs whilst performing coitus in the rear penetration position (doggy-style). Exacerbated by low light conditions and intoxication. It makes one aware, that regardless of intention, they are engaged in intercourse with an individual possessing male sexual organs.
Awww, man. I was so fucked last night. I took that tall chick home and I just didn't realise till' I felt some slapback. FUCK!
by MajorBlue October 24, 2010
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slapback

A turd so long, that it sticks out of the water and could literally slap you in the butt cheek
"Hey Javier, I just took a shit so big it almost gave me a slapback!"
by Javier4life November 23, 2013
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cummy slapback

when a man nuts on a woman's rear end then proceed to savagely beat her rear end with his penis
Yoo, chaquarius just gave that hoe a cummy slapback.
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