I had some sort of cyst on my back and I just can't stop picking and squeezing stuff like that in the hope it will pop because it irritates me so much which most times makes it way worse, just like that one. It was quite deep under my skin and I tried to cut it open with a razor and accidently went a bit too far, bled like hell and became infected so the cyst got even larger but it just wouldn't give in. Fast forward a week sitting at the dinner table I dropped my spoon and bend down to pick it up, the weakened tissue from the X I cut into it gave up at that point and basically the whole thing unloaded right into my shirt like a nerd on his first date. It even made a faint popping sound. Looking at it my mom told me that I was quite precise with the razor and it looked like someone hollowed out a loaf of bread on my back because of the cuts. It bleed worse than the first time and even my underpants got stained. But the feeling to finally get rid of this thing was grade A 100% heaven. >>11051
What you experience is the fluid in your body gaining momentum trough your movement and since the solid part of your stomach moves way faster than the fluid the secondary gets pushed out like a simulated reflux.
The feeling of being unable to breathe is a instinctive reaction of your body to prevent you from inhaling your own stomach acid by accident during sudden movements since acid and lungs seldom get along well.
The icy wind in your throat is actually the feeling of the slightly caustic irritation caused by leaked stomach acid which is also the reason for the bad breath because hydrochloric acid with food crumbs is not quite the most delicious thing. Also for some reason chemically burned mucosa tissue can reek pretty bad.