The following is from a FoxNews.com blog by Mike Straka. I've had a similar experience, and busted up laughing
As if flying long distances in cramped airplanes isn't already uncomfortable enough, people routing through the overhead compartments with their butts in your face is enough to make you go Grrr!
That was my experience on a flight to Las Vegas for the Consumer Electronics Show in my aisle seat (I knew I should have booked a window seat). Every hour or so, the guy across the aisle from me would decide he needed some hard-to-find item that was packed away in his bag in the overhead compartment.
And every time he did it his butt was smack dab in my face.
The first few times he did it I tried my best to ignore it and not get too Grrr'd about it. This is a long flight after all, and I was hoping he would get what he needed and be done with it. But after, like, the sixth time of bending and hitting me in the head with his butt, I knew I had to say something.
But I didn't. I just bit my tongue and tried to fall asleep. I figured with my luck my comment would soon escalate into an argument, and the next thing you know some flight attendant would be having me arrested or some air marshal would be putting a bullet in my thigh.
Sometimes it's better to Grrr in silence.