An alternative to a birthday for a person who was not "born" but brought into the world via cesarean section. Thus because this person was not born, they cannot have a b-day or birthday, and they must have a c-day or cesareanday.
Trevor: Happy b-day Derek!
Derek: I think you mean c-day, you see I was not "born", it was more like... have you seen the movie Alien?
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.