1 definition by IST Slang 2012
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
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!
Guy #2- Yeah n she bought her friends too, complete SMASH STACK!
by IST Slang 2012 September 2, 2009