Not sure if this is the kind of thing you're looking for, but I sometimes fall asleep with one of my arms under my head or some other part of my body, cutting off circulation. When I wake up, my arm is completely numb and I can't feel it at all. At first, I usually panic and go "where the fuck is my arm" and once I realize it's still there, I move it around with my other arm since it can't move on it's own. It becomes very limp and I feel like a part of my body is dead. Pretty cool feeling.
I LOVE IT when that happens.
It feels so weird swinging your right arm in the sky with your left arm as if isn't your arm at all -- it feels like you're holding a corpse's arm wtf. I've eventried and purposely slept in such poses that I'd intentionally cut off circulation to my arms and i'd then wake up in the middle of the night - jump off my bed and actually feel arm-less for a few moments. My arms then feel like they're clinging onto me like partially cut-off joints -- it feels FUCKED UP for sure, but oh so interesting.
I'm not fully aware if this might actually be damaging to any nerves or muscle tissue in my arms, which would sound very logical as oxygen supply gets blocked to them though. I also suffer from low blood tension, meaning my blood circulation is simply a lot easier to obstruct than for example someone's with a high blood tension.