>>119614554I was referring to deepthroating itself. Sliding it down on a throat so much that it causes a visible bulge is not something pleasant. The repeated back-and-forth motion triggers the gag reflex, It's not uncommon for beginners to end up vomiting from it, but they don't show that up in (most!) porn videos.
But the dangerous part is that it blocks the girl from taking a breath. So one would have to pull out every half minute or so, unless the girl has really good lungs. It's why you often see the girl slapping the guys legs, signaling "I'm out of breath, pull out!".
The choker snapping part, I'm not even sure if it is possible. The choker would need to be made of material that breaks easy, and wound up tight enough so the bulge is enough to tear it. But then it would also interfere with just normal swallowing.
It could make for an interesting porno experience, I wonder if it was ever attempted for real.