Wow! I didn't even know that was a thing guys did, and I live with TWO of them! No, I've never done this. I'm quite happy to feel my hand when I'm masturbating. lol
I've never tried it either but maybe it's worth a shot.
Don't think I can do anything with my arms or hands numb so I prefer to have them 'alive' as my own
I have never heard of this. It sounds annoying and painful. There is nothing worse (well, okay, there are a lot of things worse, but you get my point) than the pins and needles after your arm or leg falls asleep. Not a turn-on.
Like beating yourself over the head with a bat because it feels so good when you finally stop.