I flew up to Dallas by myself a few years ago to see Norm MacDonald on New Year's Eve and ended up partying downtown after. I had a flight back the next morning. It was during a taxi strike so I had to hitch a ride to the airport really early - way too early - and just continued to drink at the airport during the few hours until my plane was scheduled to depart.
It basically became a two-day bender for me, which I was used to at the time. When I got to my seat I was seated next to two teenage girls who were totally sober - not hungover at all - but turned out to be down for whatever. They thought it was cute that I was already drunk in the morning. I told them about my night out and they thought I was a really cool guy - really independent to be flying by myself to Dallas just to "party" - as the one girl put it.
Knowing that I was pretty drunk, and presumably on a dare from her friend, the one girl told me to be nonchalant about it, but to meet her in the bathroom in two minutes and gave me a kiss on the cheek before getting up and leaving. This left me in an awkward two-minute silence with the other girl who I could tell was kind of anticipating what would happen next.
Sure enough, I went back to the rear of the plane and tapped on the door (there weren't many people on the early-morning flight on New Year's Day). I went in, she gave me an amazing blow-job, we went back to our seats, and the plane landed shortly thereafter. I never saw her again.