I think the kid behind me was that awkward inbetween size where his legs weren't long enough for the seat, so his knees were positioned before the end of the seat, making his legs stretched out so that his feet touched the seat in front of him (my seat). I dunno if that makes sense, but he didn't seem to be kicking on purpose, so I didn't get too mad about it. Still annoying though, at least it wasn't a long flight.