Slopping Off 

The female equivalent to jacking off.

I dont think you have a problem, I just think slopping off in public is suspect

no, I wasnt pissed...Just kinda annoyed I could hear her slopping off all night

Slopping Off by Boss_KushOG November 30, 2010

Don’t go slopping off your ding dong 

Slang phase for advising people not to have too much sex.

Jack said, “ have fun tonight but don’t go slopping off your ding dong!”

Don’t go slopping off your ding dong by Lizzy Bet August 6, 2023

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

you are slipping off topic 

james get back on topic you little shit

gents you are slipping off topic

you are slipping off topic by walkergang schmidt December 9, 2019

Slipping Off the Hobby Horse 

Meaning to relapse. Also someone trying achieve something but is failing to do so. Often referring to how someone is doing in there life overall.

Danielle keeps slipping off the hobby horse, she can't seem to get it together.

Slipping Off the Hobby Horse by Jeff Sley December 16, 2011

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

Office Shopping 

to take office supplies for personal use (i.e. to steal)

Joannie needed some extra packing tape for home so the next day at work, she went office shopping.

Office Shopping by Elvira Pepper February 7, 2017