slumpin 

Loud bass on your misic; when your beats is all the way up an the bass makes the rear veiw mirrors vibrate and shit falls down.

Nigga was playin [Chamillionaire, his beats was slumpin.

slumpin by Whodat May 13, 2005

sluppin

When a friend gets lazy and doesn't uphold prior commitments.

Man, ever since Berkeley left, Ben's been sluppin

Your place is a mess, I would come over but u sluppin

sluppin by snapchatot January 23, 2016

slumpington 

The place one goes when slumped, where immediately after they are not conscious. Presumed to be a fictional location

Wow, last night during that fight I took that guy to slumpington!

slumpington by Joseppi Lucasio April 6, 2017

Slumpkin 

The natural evolution of the blumpkin. This entails having sex while taking a shit.

Alex- Last night I was with Elizabeth, and I had to take a shit.
Collin- So what did you do?
Alex- I suggested a blumpkin.
Sean- And....
Alex- She didn't want to give me head.
Collin- So....
Alex- I got a slumpkin.
Sean and Collin- YOU DOG!

Slumpkin by D.S.C. May 11, 2010

Slumpkin 

The act of masturbating on the toilet while squeezing out a Cleveland Steamer. AKA, the Self-Blumpkin.

Melvin would often sneak into the bathroom for a quick slumpkin to beat the office dullard.

Slumpkin by BaconQuest February 13, 2005

Slumpkin 

The act of auto-fellatio whilst in the throes of defecation.

Joey was so trashed last Friday that while he was dropping a deuce, he decided to give himself a Slumpkin, passed out, rolled forward and woke up covered in his own shit.

Slumpkin by brownnoser October 29, 2014

slumping 

When a young male lowers his standards for casual sexual encounters. "Slut humping."

"I feel like there are no interesting girls here.... I think I'm going to end up slumping again for my birthday."

slumping by ogmarshall January 13, 2009