Term for soda-pop, usually Pepsi or a Pepsi mix. Pop+Pepsi=Popsi.
I'm going out for a popsi.
by Henchman 21 November 27, 2010
It is a small boy that dances around while he is under the influence of massive aounts of alcohol. He is also fat.
Chris Halden is Popsi.
by Patty Pie December 08, 2004