Plumbing 

To forcefully insert a hollow metal pipe into the rectum of a woman and suck out all of faecal matter. It is similar to a filthy fiddler.

Man: I'm going to go home today, to do some Plumbing.

Plumbing by Harry Veiner February 18, 2011

plumbing 

Any brass wind instrument, because of the appearance of the tubing.

Listen to that great plumbing in the band! I haven't heard anything like that in a long time!

plumbing by pentozali April 13, 2006

Plumbing engineer

A fancy title that a plumber, often affectionately termed a 'drippy' or 'pissy' in the UK, may like to give themselves. This is a gross misconception, they are merely a plumber.

Jim: "I've got a new job!"
Bob: "Congratulations mate, what work is it?"
Jim: "I'm going to be a plumbing engineer."
Bob: "Fuck off mate! You're gonna be a plumber, you jumped up cunt!"

Plumbing engineer by Asshole5001 December 8, 2017

Plumbing the Dumpling 

When your girl is taking a shit you come in and stick your dick in her mouth forcing her to give you head because she can't go anywhere.

I was plumbing the dumpling the other day and she shoved the plunger up my ass.

Plumbing the Dumpling by DYC Yetti August 8, 2010

plumbing squirrel 

The act of inserting your nut into her vagina, performed during doggy-style anal sex.

"Dude, she finally let me give her the plumbing squirrel last night."

plumbing squirrel by Harman February 10, 2005

plumbing infection 

whenever a fat mexican tells you to flush a fat lollipop down the toilet and then the fat lollipop gets stuck

Kenzie: this lollipop is gross
Zo: Flush it down the toilet

Kenzie: no thats gonna make a plumbing infection

plumbing infection by Drsteinscoat June 4, 2023

Plumbing Boner 

When a piece of plumbing arouses you sexually in the dick/ball region. Usually occurs to plumbers by their own work.

Boss: good job on that rough in.
Ryan: yeah it gave me a madddd plumbing boner

Plumbing Boner by lasiufdgadr November 6, 2011