This morning I was polishing off my breakfast, and was going back to my room to read the Straight Dope. I started hiccuping, so I took a detour into the bathroom to pour myself a cup of water.
I had an unpleasantly strong hiccup which struck with such force that I vomited up my breakfast! :eek: It was like hic-BARRFFFFF. I was lucky I was standing right over the sink when it happened, because it struck with no warning.
I guess my diaphragm slammed my stomach hard enough to make it evacuate its contents. Not something I would like to re-enact!