AST 

Awkward Sexual Tension.

Typically can be found in the early stages of a mutual crush, or between two people who desperately want to fuck each other but for some reason can't/aren't.

mark: has max asked you out yet?
allie: nah we're still AST'ing. give it a few days.

AST by Icameupwith March 13, 2012

AST 

attention seeking tool

a tool who is aware of their toolness yet continues to be a tool in order to gain attention

You AST!

AST by Grabill Mish June 5, 2011

AST 

AST is an abbreviation for Abrama Standard Time. This time scale refers to a time that is unknown in both origin and duration. A person is said to be on AST when their ability to adhere to any type of standard time frame is absent or completely out of synch with Universal time.

Andrew will meet with us today at 10:00 AST. This means that we can be sure that the actual time Andrew will show up for the meeting will be unknown (if at all).

AST by DevHellOper July 23, 2010

AST 

Already saw that

When your friend posts a link in chat that you've already seen hours ago and feel the need to let him know you've seen it.

Brandon: *Video of trashy fight at fast food chain*
Alex: ast

Brandon: Seriously? It was posted 2 minutes ago...
Alex: that's ages ago

AST by chromerunner April 19, 2017

AST 

After sex towel

hey u got that ast so we can clean this mess up

AST by C-Hearn August 1, 2008

ast 

Meaning "at the same time" in internet language.

Arnie:So ashy still sore after that butt whoppin?
Ashy: that sounds so funny and wrong ast

ast by Double A&A July 30, 2009

AST 

Sorority girls who pretty much get around.. they know how to spread it..

You can't spell nasty without a AST!

AST by sorority girl January 9, 2008