I know how the stupid the OP sounds and I would have thought that as well. I'm in college and there is this guy who is smart when it comes to giving all the answers and getting good grades. He told me when we went out for a few drinks last week that before he does any presentation, he consumes half a bottle of beer and it relaxes him but not enough to affect his judgment, coordination or memory.
I would have always thought that alcohol is a non-functional drug but remembered that my cousin who is a GP, prescribes benzos to patients in secondary school before major exams to reduce their anxiety. I suppose "the dose determines the poison".