someone doing something really sketchy. like if someone shows up to a party and they're just chillin in the back not talking to anyone is a sketch master 3000. also known as sketch master flex.
Hey, look at that guy he just creepily smelled that girls hair.
Ew, definetly sketch master 3000
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.