A Norwegian product. It is a wool "sock" that you put on your scrotum. It is designed to make your scrotum cozy, hence scrozy. It is very popular in Norway.
Dude it's so cold, but it's okay. I got my scrozy.
2. Pejorative for a person lacking fortitude; a coward. Like testicles, a scroty is vulnerable, hypersensitive, and inclined to retract in the face of danger, particularly cold weather.