I would think the hand on my shoulder would wake me up before the blanket moving or the hissing noise. Sounds like this guy was "open" for whatever the guy wanted to do (except what actually happened.......or maybe what happened)
A bartender is just a pharmacist with a limited inventory.
I am sorry but all my friends know my (removed) is off limits! Even while drinking... My (removed) is not horseplay! How horrible, his life changed in a matter or seconds. His friend that did it would have to feel terrible too.