There is a joke around town about my husband. If you can't find him while son is on the mound he is in the bathroom throwing up! Not really, but everyone knows how nervous he gets.
Our son asked us long ago not to make a scene at the field, so out of respect we have remained quiet.
When it is a big game or lots of people watching, I pace. I also try to stay away from behind the plate, out of view unless I feel he is really being cheated by the umpire.
Nice to know that we are not alone. Now for the weirdest thing, my sons best games have been when we were not there, go figure!