I don't think so, but one time in college (don't all funky stories start out that way?) I decided to ride this 16 mile bike trail in one go, so I ended up doing 32 miles with no stops on a moderately warm but extremely sunny day. This being the first time I'd attempted something of that length I sorely underestimated how much hydration and fuel I needed to finish it up. When I got back to my dorm I chugged, like, a half gallon of water, left the rest of the jug by my bed, and fell unconscious for 4 or 5 hours. No nausea, no vomiting, no burnt skin (I'd worn a white shirt) but I was a little lightheaded and dizzy. Not the sanest or safest thing I've ever done, but at least it was relatively mundane.

And I interrupt my rambling to ask: why do you ask? Do you think you have heatstroke?