Hydro Dump 

A purely liquid and sometimes greasy diarrhea-like excretion. Usually uncontrallably released while farting.

Anonymous Soldier 1: Guys, I need to eat something before we go drinking, or else I'm gunna have to take a hydro dump at the end of the night.
Anonymous Soldier 2: Hurry up and grab that loaf of bread on the counter!

Hydro Dump by Josh Sabourin June 7, 2007

Hydro Dump 

When you have to pee very bad and can't get to a restroom so you padlock and let loose in your ass to hold it until you make it to the bathroom so you can shit it out like diarrhea. This may dislodge fecal matter and come out in spurts causing your ass to have a machine gun effect while shitting.

Levi what the hell happened to your toilet? Joseph you won't believe this. I couldn't make it home in time so I padlocked and pissed in my ass. As soon as I got home I couldn't hold it in my ass any longer and ended up hydro dumping all over the toilet.

Hydro Dump by I Am The Ferrett January 9, 2020

Hydropump 

When a male receives fellatio from a female who has her mouth filled with icy cold water.

"Dude, Sarah fully gave me a hydropump last night...I mean, it felt cool, but my dick shrivilled like a sundried prune..."

Hydropump by Heckles July 27, 2007

Hydropump 

The Bathmate Hydropump is so named because it uses water as the medium for creating a vacuum around the penis instead of air, which is the basis of all other pumps.

The hydrovacuum it creates around the penis makes for a solid & even vacuum - making for far more uniform and solid erections than are achieved using air-based methods.

Also, because water acts as a lubricant, there is no need to use messy gels and lubes when using Bathmate, as well as helping enhance hygiene.

Of great benefit, the Hydrotherapy aspect of the Bathmate, using water in a cyclic pumping action, makes for an excellent workout of the penile vascular (blood flow) system. This anatomical dynamic is known as hyperemia.

Therefore, the hydropump promotes penile health and increased sexual stamina and enjoyment, as well as boosting the size of the male organ.

Bathmate, penis pump, Hydropump

Hydropump by Bathmate August 15, 2012

Shanghai Hydropump 

A very difficult trick in Super Mario Maker that can be very helpful in cheesing levels.

"Wow! did you see Juzcook hit that Tokyo Sandblaster into a Shanghai Hydropump? Goddamn!" -Miyamoto

Shanghai Hydropump by Jester Hoffman October 20, 2016

R. Kelly Hydropump 

Pissing in someones asshole

Tom R. Kelly Hydropumped tammi last night.

R. Kelly Hydropump by Lil Smokey Pot February 22, 2017