I'm not arguing that these problems don't exist. Just that I don't personally know anyone that is dealing with it so it didn't come to mind to use the shitting themselves power for good.
But what are the rules? Is it like death note where you need their name and be thinking of their face? Or is it "Hey, that 3rd grade math teacher who gave me a hard time. What's her name? Forgot how she looks, too... she shits herself now!" Type of thing.
I feel you've got a good personal reason behind it that most don't. I haven't seen anything from you about your health recently, so I hope you're doing great, and that the move to the UK goes swell!