Top definition
To lose a football game in excruciating fashion after building a significant halftime lead.
After building a 35-17 halftime lead against Arkansas on Saturday, Texas A&M proceeded to aggy up the game by turning the ball over twice and giving up 250 passing yards.

Did you see Romo blow the lead those two pick-sixes against Detroit today? He really aggied up that game.
by Deloss Dodds October 02, 2011
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