Story reminded me of my recent flight back from Vegas to London. I had a verry large american fellow in the seat beside me. He couldn't fold down his tray table his gut was so big. I knew him getting up to let me to the toilet would be a struggle. When I eventually asked him it took him about 3 minutes to get up and shook the seat in front so much (as he used it to pull himself up) that the person in it probably had whiplash. Felt sorry for them.