slamdunk 

When someone takes a poo in a urinal at a public washroom

P1:dude i just went into the washroom and sum1 slamdunked the urinal
P2:NASTY

slamdunk by 4U_SAM November 18, 2005

Slamdunk 

when you proceed to push a girls legs next to their head and slam her pussy in missionary, commonly assisted by a spit in the mouth

hey roy! i slamdunked her pussy last night

Slamdunk by nonoplzno October 7, 2021

scoop slamdunk 

when someone grabs a womens boob or a mans moob and throws it up and slams it down..

That girl just got scoop slamdunked big time

scoop slamdunk by elcoolio October 3, 2009

shanghai slamdunk 

While fucking a girl doggystyle, preferably, in the ass, you thrust extra hard making her moan in pain/pleasure, you then shit in your hand and slam dunk it in her open mouth.

E.g.: "Dude, i totally shanghai slamdunked the entire Chinese gymnastics team. That's why they all have sour looks on their faces!"

shanghai slamdunk by alejandroninja May 9, 2014

SuperBowl slamdunk 

When one tall man holds a pocket pussy and slams it down onto another tall man’s penis

“Yo, dude, come to the court cuz I’m boutta SuperBowl slamdunk Brian’s cock”
“Ok bestie”

SuperBowl slamdunk by Daffy Fuck from space jam January 27, 2022

Portuguese Codfish Slam Dunk Chocolate Soup 

A Portuguese Codfish Slam Dunk is an incredible, but elaborate act, that involves the consent of both male and female partners.
It begins with the male performing anal sex with the female, finishing inside of her ass, and then using his bare hands to expand her anus hole, proceeding to pour fresh seawater (simply water with salt added to it afterwards works), into it, making a flesh bowl of semen and salty water. The male then proceeds to fit an entire codfish inside of the female's anus, shoving it in as far as possible, and shitting all over the codfish, pulling it out, and feeding it to the female.

Luke: Hey guess what I did yesterday with my girl?
Mike: What'd you do, man?
Luke: I gave that bitch a Portuguese Codfish Slam Dunk Chocolate Soup!
Mike: Damn, I wish mine would let me try that with her!

Portuguese Codfish Slam Dunk Chocolate Soup by Furgieman April 7, 2016

brown chunk slam dunk

v. phrase Essentually it means you have to take a shit.

Im gonna drop a brown chunk slam dunk!

ex. Taking the browns to the super bowl
dropping the kids off at the pool

brown chunk slam dunk by UnKnownSteel June 14, 2010