The equivalent of being "iced", but instead of a Smirnoff Ice, it is one of those pussy frozen daiquiris/margaritas sold in pouch-like containers. When a person gets "pouched", they have to get on the floor in a most humiliating fashion and drink all of the pouch.
Lucas's friend walked into the room and Lucas pulled out a hidden pussy ass Seagram's Daiquiri and yelled "POUCHED." The friend then proceeded to get on his knees and suck the pouch until every last drop was gone. He was then given a Cleveland Steamer.