Top Definition
... means, And Then Apple Sued Them! Exclamation points follow the acronym to emphasize the fact that any possible thing that has happened, is happening, or is going to happen will probably be followed by an Apple law suit against any person, company, nation, group, plant, animal, natural resource and/or toddler attempting anything.
me: Hey. Look. A rectangle.
my friend: ATAST!!
me: Wha?
my friend: Oh, you didn't know? Apple doesn't allow other people to make rectangles. Or ____ (fill in the blank with any other thing that has ever been invented).
by JGuy The Great! February 16, 2012

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