When the hefty hag was a supervisor of mine, every day just about there were stories of how great her stupid boy was at whatever. She must have wanted people to applaud like seals.
Speaking as a former kids’ soccer coach, I’d have to say that, while you don’t have to be crazy, it does help.
There is an old movie with William Bendix called “Kill the Umpire” 1950 with Bendix yelling it every chance he can.
http://www.imdb.com/title/tt0042641/
I admit I started off like this, pushing my then-young son to play t-ball, soccer and enrolling him in tae kwon do lessons...to say that he showed zero aptitude OR enthusiasm for any of it would be an understatement. I finally got the message one day when his t-ball team was taking a group picture, picture this: all the kids in their uniforms on one side with the coach and all the parents on the other side yelling, screaming and cajoling the kids to move around in order to get the best exposure in the picture. Finally the coach turned around and told us all to go stand over there by the bleachers while they took the picture, AND for the rest of the practice. If nobody else got the message, I certainly did, and my now-30-year-old son’s nascent professional sports career shortly withered on the vine, LOL