system
A chat on subreddit /r/NoStupidQuestions
human
I've seen a few reports of people sewing a bunch of fishing hooks inside their pockets - basically, you can put you hand in, but not out, without going to a hospital and police station. Don't know if it's an urban legend though.
gpt
This is really cool idea, but I feel like I’d forget that I shouldn’t put things in that pocket lol