[reading: J.K.Rowling, "Harry Potter and the Half-Blood Prince"]
What did get annoying was that it seemed to be my day to attract space invaders. First, the guy who came and sat next to me at the airport kept on overflowing his chair into mine (until I growled at him), and then something similar started happening with the guy next to me on the plane. I didn't fancy the prospect of fighting off his elbows for twelve hours, so I 'accidentally' left a magazine wedged at the side of my seat, which effectively acted as an mini wall to keep him out. Petty, I know, but much more comfortable.