Oh man, I was recently on flight in F on a 737 from IAH to SAL. In the row opposite me, there was a guy of your proportions++ in the aisle seat and a tiny woman sitting next to him at the window. After dinner the lady had to go to the restroom and the convulsions that the guy went through to let her pass were hilarious. He absolutely refused to get up but attempted to move sideways to allow her to pass. While she was taking care of business he used the seat in front as a lever to pull himself up. I thought he would break that seat.