Shag Ass 

To run fast.

The cops showed up so I had to shag ass.

Shag Ass by Jeremy March 22, 2004

Shag Ass 

v. to flee from an area, typically to evade trouble

Example 1
Guy 1: "Yo man, you got the goods?"
Guy 2: Hell yeah, give me just on sec my man."
*police siren*
Guy 1: "Oh shit! It's the fuzz! Lets shag ass!"

Example 2
Guy 1: "Dayyyummm! Look at that fine bitch comin'this way."
Guy 2: Nigga, dats my ex! The one I was tellin' you bout who won't stop callin' my house. Lets shag ass!"

Shag Ass by Purple Turkoglu Also April 19, 2013

Shag Ass 

the act of shaging someone's ass

If you shag ass her, then shed be waddling for days.

Shag Ass by Theribus September 29, 2005

shag' ass

A girl who openly flirts with men and has a very active sexual life.

Dude 1 : Yo, I have a girlfriend
Dude 2 : Who is she?
Dude 1 : Ciara
Dude 2 : Yo man, I heard that girl is a real shag' ass

shag' ass by DirtyMome December 26, 2010

Ass-shag

A slang word that is used to describe the act of penetrating the anal cavity with a male penis or other penetrative (usually sexual) devices e.g. buttplugs and dildos.

That young man so loves to ass-shag that he ejaculates instantaneously in his underpants whenever he sees his girlfriend bending over!

Ass-shag by CHYX January 10, 2008

shagass 

to walk very slowly so that your ass jiggles with every step

Fred and Sally like to shagass when they are shopping

shagass by Kelly Madden February 1, 2008