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The epitome of being all over something. Tri Delt refers to the Delta Delta Delta sorority which is known all over the country for very large girls.
When the troops brought the loaf of bread into the Ethiopian village, the starving kids there were all over that mofo like a Tri Delt on cake.

Shit dogg, check out that guy totally covered in bees. Those things are all over him like a bunch of Tri Delts on a bunch of cakes.
by Nick D November 03, 2003
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