Going "Mashed Potatoes" on someone is where you perform the act of pulling down your partner's pants, smearing mashed potatoes (any flavor will do) onto their buttocks, and "motorboating" them between the cheeks. If done correctly there will be mashed potatoes strewn about the area where the act had taken place.
Tom: "Check out that girl in the yoga pants", Earl: "Oh yeah, if I had the chance I'd be going mashed potatoes on her all day"
by Alberto Chodema March 11, 2014

Phrase.
1) Can be a statement in response to surprising news, akin to "Blow me down with a feather."
2) Can be a great line as a comeback, akin to "Suck my Cock."
Has no real meaning or context.
1) Can be a statement in response to surprising news, akin to "Blow me down with a feather."
2) Can be a great line as a comeback, akin to "Suck my Cock."
Has no real meaning or context.
1)
Person 1: Homosexuality was just criminalised!
You: Well Butter my Mash!
2)
You: Butter my Mash, bitch!
You: Well how about you just go Butter my Mash.
Person 1: Homosexuality was just criminalised!
You: Well Butter my Mash!
2)
You: Butter my Mash, bitch!
You: Well how about you just go Butter my Mash.
by cheeeeeze December 1, 2010

by cheggers25 October 23, 2005

by Ucfjim June 6, 2010

ussually a sick prank. when one is dared by another employee to cover themselves in mashed potatoes and run naked past there fat potato hungry co worker
timmy dared jimmy to run pasted diane coverd in mashed potatoes knowing he would get a very uncomfortable mashed potato ride
by dlove11201 January 27, 2010

by TeeMACG August 4, 2007
