An individual who is the last one to have sexual intercourse with another among a group of more than three participants.
Dave- "Me and and some friends are going to go run train on this girl. You in?"
Steve- "Hell yeah! I call being the Polish Caboose!"
Steve- "Hell yeah! I call being the Polish Caboose!"
by SonOfPrince March 17, 2011
Get the Polish Caboosemug.