The the mentally handicapped, and thus often euphoric or hysterical state of mind that follows a night of heavy drinking.
"Sally was definitely on half-speed this morning after Edward 40-hands last night. At Breakfast she almost peed herself laughing when someone pointed out that her shirt was buttoned up incorrectly".
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the USCoast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.