1 definition by Icameupwith

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.
by Icameupwith February 6, 2012
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