I have a few. Mostly newbie stuff but some could happen to anybody.
1. Starting a game of 10vs10 two girls age 13 give or take got to the adjacent field and when the match starts they light me up. I am by the tape so when I am getting shot to my right out of bounds I immediately throw my hands up and yell for the ref. I am commended for not shooting them back in anger. Worst part was they were on my team.
2. Young kids running down the field and not having their lids closed all the way and losing a full hopper of paint. You feel bad but still laugh a little, good leason anyway.
3. Hopper and mask hits galore going uncalled. The field only had one ref for a 10vs10 game and the kids had no idea when they would get hit in the mask or Hopper unless you shot them in the eye. It happens to everybody but kids would come in with multiple hits on the hopper and top of the mask.