How about the
"pitcher's dad guy"
You know the one that indicates all the players are out of position well his son is getting shelled!
This thread reminded me of a mother from about 10 years ago who had the "best curveball throwing son" in the beach. She was extremely frustrated because the umpires did not know how to call a curveball for a strike! After about 5 or so comments out of her, I finally ask her if hitting the dirt before the plate made a difference in the eyes of the umpire!