It's from convulsing. I can't explain it to you in graphic detail, but you know how you can't hold your eyes open when you sneeze? Well, some of the same forces are exerted when you puke.
Gagging a little is one thing, that's sorta sexy in a "I'm a hot little strumpet who can't get enough cock", but throat raping/puking...to each his own. Yeah, I think past a certain point it's *WAY* outta hand. ('cuz it's in your throat). ba-dum-bum CRASH


