I think it is funny. I had once actually fell asleep in class when I was in chuo kikuu, chuo kikuu cha - I woke when I heard the professor discussing if I was asleep au not - I guess I was not snoring for him to ask that question.
haha...unfortunately our class is a little too loud for me to get e good nap.... ;) how about our classroom during a boring history lesson when everyone else is sleeping too? xD