A person puts their hand on their neck leaving there elbow pointing out, then using the pointing elbow hits another person in the back yelling stack
by Furz December 30, 2007
Get the Stackmug. A unit of measurement, in which can be used to measure anything and can also be any quantity just as long as its "fat" in appearance.
by Darin Williams April 2, 2008
Get the fat stackmug. (transitive verb): The act of having sex with two women at the same time. Technically this refers to instances where the women are stacked on top of each other, stomach-down. Colloquially, however, double-stacking is used to mean any act of a threesome where one or more men have sex with two women at the same time.
by Aaron54 March 31, 2008
Get the double-stackmug. by R.P.M. November 8, 2005
Get the Whack Stackmug. Stack amillieon is an american rapper/songwriter from the east coast who had lived in alaska for a part of his life, he's done songs with a lot of major artist. He's dope
by mr.peeshoty May 16, 2009
Get the stack amillieonmug. When someone sits on the toilet and another person sits on their lap to shit and uses their thighs as a seat.
by shit-bag October 15, 2010
Get the Double Stackingmug. by Pebbble November 16, 2018
Get the brick stackingmug.