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Smash stack

Closely linked to the word "post material", smash stack refers to two or more hot girls in the same areah or room.

Smash meaning having sex with a chick and stack meaning more than one

Guy #1- You see that post material in the corner?
Guy #2- Yeah n she bought her friends too, complete SMASH STACK!

by IST Slang 2012 September 2, 2009

5👍 2👎