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2.
A five meat five cheese hamburger.
Hey Matt why do you eat a cinco stack after every football practice?
by mucha103 May 22, 2011
 
1.
a pill of e, or ecstacy, with 5 layers, or times the base amount, as compared to quadstack, as 4.
i picked up some cinco stack green telephone pokeballs today, gonna roll nutzzz
by iDRANK-BONGWATER December 23, 2010