On an [un]interesting side note. The other night I was giving my dogs a snack and my smallest dog, Rusty, had to reach down over the bed to get his as it fell off. He came up choking ! He got in the floor and passed out and quit breathing with tongue hanging out and for all the world looked dead as a doornail. I yanked him up out of the floor and put him on the bed with his back to me and did the Heimlich on him three quick times. He expelled a big breath and came right back to life after about 5 minutes of laying there and catching his breath. Scared the living shit out of me. I took him to the vet the next day and he checked out OK except for the old heart that I know he has. They did put him on meds for that.
Choking is dangerous as hell and when performers do it for sex play it's just plain stupid.