This has actually happened to me at least 3-4 times when i ended up sleeping on the floor. Once i remember i was so tired, being dramatic and all, i collapsed on my kitchen floor and ended up waking 2 hours later. It was not my intention to fall asleep, I was just exhausted. Another time, i ended sleeping under my study table, after i bent down to pick up a piece of paper. I never made it back up. Believe me when i say, when you are tired, you will sleep anywhere.
I have written about the site before. I used to go there daily but not anymore. I went there just now and this cracked me up. A lot of the stuff on there is very accurate and it's nice to know a lot of med students feel the same way you do.