by robs asshole January 14, 2008

Man, I caught some major mashed potato brains the last time we tripped. I don't think I could deal with that again.
by hobolizardg January 4, 2012

When you chuck a baby or toddler into the highway and wait for the baby to become a bunch of mashed bits
by jsqurriel November 21, 2019

A sexual act involving three people whereby a man has intercourse with a women assuming the doggie-style position and a third person (man or women) inserts their hand into the bottom of the women and gives the man a hand-job from the inside.
by Wong Poker September 26, 2017

When you are getting your your junk pounded on by a significant other (e.g., a partner, stranger, lover, hornswoggler) whose hands are sandy af.
The act of really going to town on someone's private parts with hands / feet filled with sand.
A "Sandy Handy" but with a little more gusto!
This is a non-gender bias term, anyone can give or recieve a montauk mash job as long as thier extremities are sandy and you are really "just mashing it." You also don't have to be in Montauk, or on a beach.
The act of really going to town on someone's private parts with hands / feet filled with sand.
A "Sandy Handy" but with a little more gusto!
This is a non-gender bias term, anyone can give or recieve a montauk mash job as long as thier extremities are sandy and you are really "just mashing it." You also don't have to be in Montauk, or on a beach.
"Whoa look at those two homeless guys giving each other Montauk Mash Jobs under the boardwalk" -- an angsty teen witnessing a grown man receive a sand filled hand job on Long Island
"Yeah she gave me the ole' Montauk Mash Job" -- a guy with severe sand burns on his dick
Guy 1: "She was trying to grind my dick into dust with her sandy hands"
Guy 2: "So she gave you the montauk mash job"
"Yeah she gave me the ole' Montauk Mash Job" -- a guy with severe sand burns on his dick
Guy 1: "She was trying to grind my dick into dust with her sandy hands"
Guy 2: "So she gave you the montauk mash job"
by #SquidKid April 24, 2017

Nobody knew if Jessica was pregnant or just full when she took her shirt off at the mashed potato party
by BenD3 August 25, 2017

When a male is giving anal sex and the female begins to take a dump. The shit will come out and resemble chocolate mashed potatoes.
Dude i totally fucked that girl in the ass and it hurt her so much. she started screaming and got revenge by making her famous chocolate mashed potatoes.
by Rawrsorz January 24, 2010
