Ass Mash 

Getting your ass handed to you by a Wal Mart employee.

Going through the 20 item express checkout line with more than 20 items will result in a ass mash beat down. Watch out!

Ass Mash by Lassie17 May 31, 2010

Mexican Ass-mash 

When you put a burrito on your dick and proceed to fucking somebody in the ass-hole.

Oh man, I gave her a Mexican Ass-mash last night, and when I was finished, her ass-hole was deep, dark purple. It was awesome!

Mexican Ass-mash by liamisawesome1111 November 18, 2015

Hot-Ass-Masher

One who vaginally penetrates a girl, while beating her ass into submition with a blunt object.

Christina: I had to go to the hospital after last night Fred, you Hot-Ass-Masher!
Fred: Worth it.

Hot-Ass-Masher by Hot-Ass-Masher Crew June 15, 2010

mashed potato ass 

An older woman's ass that is rotund and full of cellulite dimples. When they sit down, the ass seems to squish and go all over the place, as if they were sitting on a pile of mashed potatoes.

My sixty-five year old teacher has a mashed potato ass. It is very distracting.

mashed potato ass by ihatebuffering March 21, 2011

Mashed Potato Ass 

When one flexes his or her ass causing multiple dimples to form giving the appearance of lumps like mashed potatoes

Person 1: Oh my God, look at his ass.
Person 2: That is some seeeerious mashed potato ass.

Mashed Potato Ass by ABlackMan69 November 3, 2010