The re-occurrence of a holiday, regardless of similar date to previous years, that holds a special meaning to a person because one of the previous celebrations of this holiday involved a major event (i.e. first date, starting a friendship, losing virginity, moving); if the holiday moves, than the "holiversary" moves too
"Dude I'm jewish and don't have any plans for easter, wanna hang out?"
"sorry man, me and my girlfriend are celebrating our holiversary since we met volunteering at a neighborhood easter-egg hunt last year."
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.
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.