Sure. It's something you're gonna hit when your opponent grabs a same side collar grip on you. The perfect spot will be them grabbing right below your collar bone.
Once they grab the collar, you have to get their arm to bend at about a 90 degree angle, which will happen naturally in a lot of circumstances. But you can force it by pulling down on the forearm. Then to keep it there, you use both hands and grab the back of the tricep, lean your head forward, and start pulling their fist right into your chest.
Their fist will get lodged right into your chest, as you pull on the tricep you can kind of twist and lean your chest muscle right into the fist. The more you pull, eventually the wrist will buckle. Usually the wrist will buckle back, kinda how your wrist folds in a push up position. But it doesn't matter which way it goes cause it'll hurt either way ha.
Once it buckles, pull hard but cautiously, because the tap will come soon after.
I dropped to my knees so I can pull harder and trap him better. He tried to go to my back and ended up falling over, so gravity made me come down harder on his wrist than I wanted. So he got a little hurt, but he was ok.
Train them with caution and take care of your teammates while doing so, but they are great!
