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1.
when despite your best efforts you are are unintentionally

groped by the stranger sitting in the seat next to you during a plane trip.

Most commonly occurs during long haul flights, after alcohol or sleeping aids are consumed.
I was watching the in flight movie when I the guy next to me passed out and plane humped my shoulder!

I woke up and the chick beside me was passed out with her hand on my thigh- I so got plane humped!
by EmSquared725 September 15, 2010