Inverse Whac-A-Mole 

Thrusting one’s penis into the asshole, then immediately pulling it out and inserting into the vagina, repeating steps one and two until completion.

“I Inverse Whac-A-Moled the literal shit out of that asshole and put it in her vagina.”

Inverse Whac-A-Mole by The_Urban_Troll September 1, 2022

inverse function of shit 

When instead of taking one dump after multiple days, you take multiple dumps in one day.

James: dude do you have diarrhea or somethin, why u keep rushin to the bathroom every ten minutes?

Sean: i dont have diarrhea. Im experiencing an inverse function of shit cuz i ate that shady indian curry!

James: nigga if u mention math again imma take an inverse function of shit in yo mouth!

inverse function of shit by yeabuddy19 June 20, 2014

inverse vandalism 

Acts that are explained because the person who done them is capable of doing so!
Example: self-destructive art installations.

Inverse vandalism is common in the nerdvana world of Web developers!

inverse vandalism by hammer---;, hytham April 22, 2007

inverse assing 

The act of sticking your ass in someone else's ass.

"Yo, Mr. Fields threatened to stick his ass in my ass"

inverse assing by Mr. Fields May 4, 2005

inverse specificity law 

A natural law that dictates that the depth and accuracy of your task description is inversely proportional to the importance of the task. You will be given a ten-page written specification on preparing an invitation for five customers to come to morning coffee, a tax audit report will be requested in an email consisting of a single paragraph, while a request to revise the organization's entire cost structure will be delivered verbally in a single sentence.

CEO: Bernie, our database manager left and we need a report of all customers who bought semi-spleeted widgets in the northwest region since the beginning of the month. There's a potentially fatal fault and we need to do a product recall.
Bernie: Sure, right away! What's the product code for semi-spleeted widgets, and what's the region code?
CEO: Dunno. The database manager left. But it's all in the database. Just do it.
Bernie: Hmmm... the inverse specificity law indicates that this task must be critically important!

inverse specificity law by Terrible Tadpole June 3, 2010

inverse blumpkin 

The remix of the classic blumpkin. This take is when the girl is taking a shit (which is rumored to happen occasionally, believe it or not) and is giving a guy a blowjob at the same time.

Sally is very efficient with her time. She gives inverse blumpkins every morning to her boyfriend while planning out the rest of her day.

inverse blumpkin by mrshermykins January 11, 2011

Inverse Blumpkin 

A rarely seen variation of the blumpkin. Instead of shitting into the toilet, the male shits on the womans chest and jerks off into the toilet or sink or anything that might be close enough to work as a receptor of your cum.

John:Last night i totally gave Laura an inverse blumpkin!

Jeremiah:What the fuck is that?

John:That bitch was on her back and i shit on and around her chest then blew my load onto Eds towel.

Jeremiah:That shit is cash yo.

Inverse Blumpkin by Jonny Bones March 19, 2008