One of the best ways to test their submission; Inspection. Leave them waiting but keep track of even the slightest movement. Punishment should be swift and severe.
21m-Sub: I’m on Day:09 of my first ever 2 week lockup. I made myself a little support strap(don’t mind the leaking hehe) but day 9 is definitely the hardest and I’m wanting to cum so badly I can’t take it anymore.