Sometimes they put you under "twighlight" sleep. That is where you don't need a tube in throat type of deal. This is what I had the first time and I prefer it. I do remember waking up once or twice during the procedure, though. There was no pain, but I remember the lady looking at me, me looking at her, me looking at the doctor with a tube in my chest, then she put me right back under.
I have another op scheduled and they are going to put me completely under. It's about half and half.
Blarney...Yes, you could have it done on a friday and be back to school on Monday. You'd be a little sore, but no one would notice anything out of the ordinary. You'll have to wear a vest under your shirt. I just told people I hurt my back lifting weights and had a "support vest" I had to wear for a couple of weeks.