Glad I am not the only one!
Can't remember exactly why or what I was raising my arm for as the ball was in play at the time, but just at that the very moment I did, a pint sized U12s player ran from behind me and I poked him in the eye near the edge of the area! Turned to see if he was ok, in true premier league style kid went down as if he had been shot, looked back towards the action with the intention of stopping play, but as I raised my arm again to blow the whistle, the opposition score. The whole thing happened in a matter of seconds. Needless to say, I received no end of abuse from the sidelines as the player "would have stopped the goal being scored". He had 5 team mates behind the ball and not one made a challenge, but when do managers let facts get in the way of a complaint!
On the opposite side of the scale, I'm hardly a giant, but no midget either @ 5' 11", but one of my son's u13s team mates is already 6'! Seriously weird doing pre-match respect handshakes when you are looking down at the kids, then all of a sudden the one standing in front of you eye to eye without having to look down!