Jill: Why do you keep grimacing when you sit down Jack?
Jack: I gave myself a scroteration last night Jill: You gave yourself a what now?
Jack: FFS! I cut my ballbag shaving woman!
When you have a six pack on your scrotum. It is achieved by putting a weight on your balls, and then going in a hot room, then a cold room and getting a six pack on your balls.
Jeff: that’s a nice scrotepack john I wish I had one.
John: thanks Jeff I had to work a lot for my scrotepack.
Half way between a scrotum and a badger (probably a badger without fur and saggy skin, but I don't really know). You generally call someone a scrotebadger when you mildly dislike them, but only mean it in a joking way.