How to make someone passout by just squeezing there like arm or something?

well i heard that if you like squeez someones arm like in a sertian spot they will pass out or something like that but like i want to know how for self defense thanks mature answers onlyHow to make someone passout by just squeezing there like arm or something?
You mean like on Star Trek the Vulcan neck pinch that puts people down? I don't think that is possible. There is no medical evidence or example of it.
what? i have NEVERheard of that, I am certified in first aid and SKIP (self defensive class) so i definetly would have heard about that one.