Cleaning the pipes 

Anglo-American slang term used to describe the act of mastubation in order to empty one's testicles of a thick, fat, juicy load of baby-batter in order to start a newer batch.
Or, in the case of the film 'There's Something About Mary,' the theory that "cleaning your pipes" will steady your nerves before a date because your body will not think you are trying to have sex because you will have tricked it into thinking you have done already...

"Percy spent two hours cleaning his pipes because he hadn't shot his load for four days."

"Hey Gordon, you should clean your pipes before seeing Jennifer tonight, it'll steady your nerves."

Cleaning the pipes by Stuart Fletcher November 3, 2004

Cleaning the Pipes 

When you go into the bathroom and you end up taking a shit, pissing, and ending with a good ol' hearty fap.

"What the hell is he doing? He's been in the bathroom for 40 minutes."
"Prolly just cleaning the pipes"

Cleaning the Pipes by SantasTwerkshop December 28, 2013

Cleaning the Pipes 

Tugging your meat until you ejaculate, and then pissing. This supposedly cleans your urethra (hence, Cleaning the Pipes)

It stings, and that's evidence that it's doing what its name says.

It can also be done right before having sexual intercourse, so you don't get a woman pregnant, and you don't have to wear a condom.

John: "Ugh, I really need to clean the pipes"

John is Cleaning the Pipes in Cindy's bathroom so he can smash her, rawdog.

Cleaning the Pipes by Der Dietrich June 24, 2012

cleaning the pipes 

Afta cumming have a piss to clean the pips

afta macking a hot chick or wanking, go have a piss. cleaning the pipes

cleaning the pipes by DaUsualCrew April 25, 2007

Cleaning Out the Pipes 

1. Jacking off to dispose of excess cum (if it has been awhile since you last fucked) 2. Jacking off earlier in the day when you will be fucking a hot broad later (in order to last longer)

Since I was seeing Jessica later, I performed a Cleaning Out the Pipes!

Cleaning Out the Pipes by MOCO & P-Phat February 13, 2007

Cleaning out the pipes 

After ejaculating once, cleaning out the pipes is when he keeps fucking or wanking hard into another, weaker but still present orgasm, which doesn't expel any semen except that which was leftover in the penis from the original orgasm. Harder for those older, easier done by those you and testosterone filled.

Cool dude: "Man last night i was with mah girl and i came once, then i cleaned out the pipes and she loved it"

Lame dude: "Yeah, I cleaned out the pipes too, but I was alone..."

Other dude: "I heard about some guy in ST. Louis cleaning out the pipes, i heard he could do it twice in a row!"

Cleaning out the pipes by The ultimate pipe cleaner August 20, 2006

cleaning out the stove pipe 

the period after a heated fight that results in angry flatulence

Last night after my girlfriend broke up with me I attempted to batter her with malicious words, but abrubtly began cleaning out the stove pipe which stench from the chinese dinner I enjoyed earlier with an asian prostitute, forcefully removed her.

"God damn you!" blblblblblblb!!!!

cleaning out the stove pipe by papa sutra February 25, 2010