The lady in front of me, in 1A, just flung her seat back so quickly and hard that I seriously thought for a moment that she was going to backflip over the top like Jacques Cousteau launching himself out of the boat after a rare sea turtle.

Even with the relatively decent pitch of FC on the 757-200 (75D), she jammed my laptop into me so hard that I had to recline my own seat to un-wedge it from her seat back.