a 2 liter
bottle of soda, typically reserved for chasing shots, is chugged by the stranger at the party (typically from somewhere they say pop, i.e. Minnesota) not drinking alcohol
someone brings a 2 liter
bottle of soda to their friends' place
Free pop?!!" (strange ugly kid chugs 2 liter bottle of orange
soda) "Hey guys, they've got free pop!