The best one I had, and this is going back years ago when I was in my late 20's and flying from Sydney to LAX alone. Big plane and long flight, I found myself in the middle of a quite scary biker group of Americans that had flown to Oz to have a hell bent tour of the country and I happened to find myself as the single female in their midst whilst they were getting completely pissed and doing drugs on the way back to their homeland.
I just gave in (to the drink, not the pills offered) and they were really nice guys, I actually felt I had no choice to not join them, but turning up in LA at 7.30am was all good until the hangover hits in halfway through the morning. I was arsed and must have been visibly so, but they still let me into the country, BEST inflight entertainment ever.
Edited: 15/02/2013 at 21:22