atta

a shorter way of saying "that a girl!"

it's basically saying to someone "way to go!"
*maddie's team is tied with 5 seconds on the board, she shoots, and makes it in the last second of the game. her coach some over to congratulate her and says " ayyee, atta girl!" and pats her on the back.*
by flocka4pres May 26, 2015
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