"A mash up". Someone who is insane, crazy, or just not quite there.
That fool over there, he's a mash up.
The art of ejaculating inside of someone and proceeding to shit inside of them (preferably wetly). The colors are reversed.
Please uncle Mike… no more backwards mashed potatoes.
A common situation, experience or every day activity that inexplicably becomes disorganized, confused or grossly fucked up.
We Goat Mashed the other team in gears of war 2
V. Mash potatoing.
To slam someone's pussy.
Dude 1: Hey can I mash your potato?
Dude 2: Fuck yeah dude!!!
A form of jitter clicking most used in sm64 speed runs for blj's
Person one: what's the best way the blj?
Person two: flex mashing ofc
When a husband has vaginal sex with his wife in order to reproduce. This is only for instances in which the people fucking are a straight married couple who intend to create a child. A reference to the mashed potato like appearance of most newborn babies.
Kyle: hey john what are you planning on doing this weekend?
John: just making mashed potatoes with my sexy wife.
When a phallus looks like it's pressed between two panes of glass. Credit to Tommy of Browntown Podcast
"We had intercourse, and that was good to know it wasn't all mashed up, said Heather about Paris."