snapping off 

Using the one's mobile device with the application Snap Chat to send pornographic pictures back and forth until mutual masturbation is finished.

I started sending Snaps to Carlie, before I knew it, I was full on snapping off to her nudes.

snapping off by Todd McClever B.F.E. March 12, 2015

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

Snapping One Off 

the act of male masturbation

if he is in the shower for more than 10 minutes, he is probably snapping one off.

Snapping One Off by cliff edwards September 10, 2008

snapping one off 

endulging in one's penis

ray hurt his shoulder in the shower when he slipped snapping one off.

snapping one off by big sing August 9, 2006

slapping off 

Slang term for masturbation. First used by an annoyed African-American mother at a Greyhound bus station in Nashville Tennessee.

"The only bathroom.... (inaudible) .... yea, but we caught him slapping off in there just last week!"

slapping off by freakinheck May 11, 2014

Slapping The Post Office

A eupherism for tripping on acid.

"Teneal's dad almost drove over some niggers, he must have been slapping the post office all night long"

Slapping The Post Office by MrsDrSeuss October 28, 2011