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A group of individuals, usually young males, who are mistakenly under the impression that they are hip or cool.
Joe, Aaron, and Dave had a chance with those girls, but they blew it with those corny lines. What a whack-pack.

by Brandon H. March 31, 2006
Usually sold at 7-11 or other convenience stores, a whack pack is a collection of outdated porn magazines, usually three or four to a pack, wrapped in plastic, and sold at a discount.
While preparing for a marathon jerk-off session in his hotel room, John stopped by the local Quickie Mart and bought himself a whack pack.
by Ludditeright June 02, 2013