I was travelling with a disabled relative who was unable to get out and back because the seat in front was reclined. I myself being fairly generously built could get out only by doing contortions and pulling myself up on the back of his seat. When I politely asked this character to put his seat upright while disabled pax went to loo he did so but immediately reclined it again instead of waiting until she had returned. This meant he had to be disturbed again when she came back - many sighs. to pay him back I made a point of getting up several times and giving his seat quite a few "bangs" with my own knees. Hope he enjoyed the flight.