Take on cheating at youth sports

As a long time youth sports coach, there are a few things I can't tolerate.

Obnoxious parents
Referees who don't know the offsides rule
People cheating on birth certificates

I can't tell you how often I've seen the first two and how little I've seen the third mainly because the rules on the US are petty strict (Danny Almonte aside). But how lame is it to actually think a parent would do this.