Black-Snake 

Verb.

1. An anal pillaging in prison or otherwise, normally perpetrated by a black man with a large penis, or a white man with an abnormally large penis.
(Highly racist and derogatory)

Prisoner 1: Jeff got black-snaked by Lequan. His ass is completely tore up!!

Black-Snake by Spin.Me.Right.Round January 25, 2010

Black Snake Moan 

That one dark thought or memory, that's always there, no matter how hard you try to forget. Comes back when you're feeling low, and escalates your low to a whole new level of dark.

"That voice in my head,

every time I think it's gone,

it comes howling back.

Calls me when I'm ailing,

when I can't find my way home.

Lost in the pines

I calls it the Black Snake Moan." Lazarus Redd

Black Snake Moan by Pseudonomnomnomnom January 9, 2013

black snake moan 

The sound of pleasure or pain a person makes when a large black member is inserted into their anus or vagina.

She let out a loud black snake moan as he slowly inserted his engorged black member into her hot wet vagina.

black snake moan by Forsen August 7, 2007

Black Snake Moan 

The sound a person makes when they have been on the toilet for a long time trying to push out a dry shit after being constipated.

Justins leg shook as he forced out a black snake moan his body sweating profusely as the long hard turd finally splashed into the toilet.

Black Snake Moan by zenjiedo_68 September 30, 2009

Black snake syndrome 

The feeling of tiredness or sleepiness you get after eating a large amount of food.
Related to the fact after a snake eats a meal it much sleep to digest.

Dude 1: Awww man I ate so much I have black snake syndrome

Dude 2: what's black snake sydrome?

Dude 1: I've eaten so much all I want to do is sleep

Black snake syndrome by Whimsythemoondreamer March 31, 2013

Snapping off a black snake 

Well known Australian slang for doing a poo.

Person 1: Hurry up, mate. We've got to get going.
Person 2: Hold on. I'm just snapping off a black snake.

Snapping off a black snake by anonjwal July 8, 2016

[louisiana black snake] 

a large black penis that exceeds 8 inches soft

the white woman stared frighteningly at his louisiana black snake

[louisiana black snake] by fkn clown May 15, 2006