I smoked a joint laced with hash while on this ski lift kind of deal at Disneyland. We had to hotbox it so we would be done by the time we got to the other side. It definitely helped Disneyland be the happiest place on earth!
I also smoked a joint in a bathroom stall at LAX before getting on a flight back home. Both these happened in the late 70's, I'm sure smoking a doob at the airport would be more risky now not only because of the climate after 9/11, but it was easier disguised back then because you could smoke cigs pretty much everywhere