I felt compelled to reactivate my account in order to relate this story; it happened to me the other week.
I had been flying AMS-EWR-SEA and had done the EWR-SEA segment in a Y aisle seat. Unusually I had slept for the entire flight. Upon wheels-down I was just starting to wake up whereupon I was prodded in the shoulder by the lady sitting at the window seat.
"Sir, I just wanted to tell you that it was highly self-absorbed and inconsiderate of you to take an aisle seat and then sleep for five hours. I could not get out." I'm 5'10" and <200lbs, she was about half my size.
I won't tell you my reply to her.