A case of diarrhea, possibly accompanied by foul, sulfuric smelling farts, often coming the day after consuming mass quantities of alcoholic beverages such as beer.
"Man, after that party last night, I've been in and out of the can all day!"
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.
"Base we've got some square groupers floating outside of Miami harbor."