Deep sea plumbing 

It is when you stick your dick far into the toilet's trapway to fuck the pipes. It simulates real sex and unclogs the pipes

Hustler 1: Yo dog, I can't afford no hoes no more after the GST got raised
Hustler 2: How big's your dick?
Hustler 1: Man I use it as a tripod sometimes when my legs get tired
Hustler 2: Just go deep sea plumbing, you feel me?

Deep sea plumbing by Megatard Maximum October 22, 2019

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

penis plumping power pussy 

When a girl is so hot, a guy's penis grows throughout the
time he is dating her.

Guy #1: Dude! I've been dating Angela for like 6 months now and I swear my dick is longer.
Guy #2: That's because she has a penis plumping power pussy. In another 6 months, I'll be calling you "tripod".

penis plumping power pussy by Gemini1 October 24, 2008

Plumping Paradise

A small tropical island in Oceania where inhabitants are known as Oblongs and live under Oblong Law.

The island hosts the annual, critically acclaimed music festival, Plumpfest.

Plumping Paradise is the top tourist destination of 2019.

Plumping Paradise by oblong1 December 12, 2019

Plumbing 

Generic term for the bars of a jail cell

The plumbing in this joint consists of at least 1" hardened steel.

Plumbing by GGJoe April 14, 2015

Plumbing 

Wearing one's pants so low as to display one's asscrack. Derived from the state of many a fat plumber's pants.

Dude, pull up your pants you're plumbing.

Plumbing by lesseins August 14, 2008

Plumbing 

The act of purposefully stopping up your toilet so that the plumber will come to your house and unclog it.

That weirdo gets off on plumbing.

Plumbing by superchar January 13, 2009