Oh, wow, I get that, too. I have mentioned it to every one of my doctors, and they basically have no clue as to why this happens. Sometimes it happens when I am eating, but other times there is no rhyme or reason to it. My ENT and my MO both thought it sounded almost like an allergy, but we couldn't pinpoint anything. Mine doesn't last more than a couple of minutes, but when it does, I can barely talk. The cold air seems to make it happen, as does more talking than usual, but other times those things don't bother it at all. Like you said, it is more annoying than painful, and often embarrassing.