To expose just your dick to an unsuspecting person in a public or semi public place. Generally done by exposing the penis through the zipper of shorts or pants or allowing the cock to hang out the leg hole of a pair of shorts. More often than not, when a man is dickflashing, he pretends not to know he is exposing himself to his voyeur, so as to prevent any trouble and allow the person looking to enjoy viewing his organ in secret.
"Oh my god, that guys dick head is hanging out of his gym shorts, he's totally dickflashing us."
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.