Check the Plumbing 

#1 - Slang term for using the bathroom to rid oneself of solid waste. Used primarily in an embarrassing situation so that others do not suspect your long absence.

#2 - Slang term used among friends to indicate their needing to use the restroom.

Friend #1 - Hey, man, let's go out to a movie.
Friend #2 - Hold on and wait for me. I have to go check the plumbing.
Friend #1 - What?
Friend #2 - *walks off hastily*

Check the Plumbing by uofmman1122 January 19, 2006

Sticky Plumbing 

When you cum in the sink till it clogs and overflows like a spunk shower

Hey bro how's it going I came in your sink

Bro you better be careful or we'll get some sticky plumbing

Sticky Plumbing by Big Chazza October 5, 2020

strumming while doing the plumbing 

When you or your girl rub the clit during penetration.

I was giving it to her good and then start strumming while doing the plumbing, that really got her going!

strumming while doing the plumbing by Flushfacker May 4, 2018

dual plumbing 

During male urination: The phenomenon of two separate streams of urine exiting as a result of the two sides of the external urethra sticking together at one point.

Hey man, I took a leak before, I was hitting the bowl, then i look down and see i'm peeing on my foot at the same time!

Dude! you've got dual plumbing!

dual plumbing by toilet_master March 11, 2005

original plumbing 

Indication that a female-to-male transsexual or transgender person (ftm) has not had genital surgery.

Most ftm's retain original plumbing due to a lack of desirable options.

original plumbing by RockRabbit June 12, 2014

Clean Plumbing

Post defecation, you use your toilets bidet to hit the male G spot. Simultaneously receiving a blowjob to completion. Thus cleaning all the plumbing.

Girl: can I clean you plumbing
Man: I have already started…

Man: I received clean plumbing after eating Taco Bell

Clean Plumbing by McMahonDingo December 27, 2022

Golden Plumbing 

The sexual act of having a 69 while on the toilet.

Logan was bored on tuesday night so he called Alicia over and they fixed Logan's Golden Plumbing.

Golden Plumbing by ({})({})96 April 3, 2011