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!

Slapback by MajorBlue October 24, 2010

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!"

slapback by Javier4life November 22, 2013

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.

cummy slapback by mr.sir.prof.dr.man bro guy May 26, 2022

Seattle Slapjack 

When the penis is removed from the oral cavity during fellatio and the recipient graciously ejaculates into one's own palm. The person providing fellatio is then slapped with the semen ladened palm, spreading the viscous emissions across the face. Generally considered a demeaning act.

He was delighted that his partner pulled out of his mouth prior to ejaculating until suddenly he found himself the recipient of a Seattle Slapjack.

Seattle Slapjack by Truckdriver April 14, 2009

Slap-back Booty

The type of ass that when you slap it, the jiggles make it feel like the ass slaps your hand back

Yo, Sydney got an ass though.
Yeah, I heard she got that Slap-back Booty.
Hell yeah, my hands still stingin from it bro.

Slap-back Booty by Trojanman Murphy October 2, 2013

Slapjack

The act of ejaculating on ones hand and then slapping another person in the face.

Today I gave Melinda a Slapjack after that bitch ate the last hot pocket.

Slapjack by BWeezyAflo January 2, 2011

Gungan Snapback 

Where you pull a chicks legs in the air and blow her like Boss Nass.

Her vagina was very moist after Dan attempted the Gungan Snapback.

Gungan Snapback by Doubleplay January 6, 2015