That feeling of mental retardation after coming down from a long night of tripping on acid
Man, I caught some major mashed potato brains the last time we tripped. I don't think I could deal with that again.
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When you feed your girlfriend dinner then go home and fuck her in the ass thus mashing her dinner
A good cheap date is going to mcd's then going home and mashing her dinner
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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.
-how'd you go last night buddy?
-awesome. Got myself a Milwaukee Mash-up after dinner.
-about time!
When you chuck a baby or toddler into the highway and wait for the baby to become a bunch of mashed bits
I recently ate some good baby mashed potatoes at route 9
When you shove a cactus between your neighbours buttocks after he or she abused your doorbell a myriad of times until their behind turns to mush.
1) Time to mash me some arse!
2) That fuckwit again? He must be craving some homemade mashed arse!
A party where you eat as much as possible and wear comfortable clothes before having an orgy.
Nobody knew if Jessica was pregnant or just full when she took her shirt off at the mashed potato party
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.
"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"