Uhg, I lecture, I hate when I can hear fatties breathing.  Most people don't realize, but at the front of the room I can pretty much hear, everything, it's annoying.  I relayed a story on here a while ago, but a couple of years ago, I had a class with a very large guy in it.  Every now and again I would hear snoring, like someone had fallen asleep, I'd look around, but all I see are awake eyes.  I'd be like, who is sleeping?? and the snoring sound would stop.  well it didn't take long for me to realize it was this fat guy, just breathing, I guess not realizing he was snoring until I mention something.