Combination of "silly" and "large". Used to describe achievement/act/incident of great significance. Most likely to be found in the lexicon of students at the University of St Andrews, where the term originates.
"Shagged that bird from last night, she was a solid 7 #sillarge"
"Just won 10-1 at FIFA, not even one of them was a Jew Goal. Sillarge."
"Went through a whole series of Game of Thrones last night, sillarge."
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.