A butt locker is a thing a person can do to another person, for their own
personal reasons. Butt locks often happen in changing rooms of any gender, as it requires 3+ people to do it, and can only happen when all have a bare butt out.
If you wanna do a butt lock you need
gorilla glue, and a person not aware of the situation outside the room.
You just simply put
gorilla glue on your butt together with another person, then you wait until it's completely hardened.
After you have done all this you call the unaware person and ask for help, and watch them break down when they realize what you did.