It's funny when you're at a professional sporting event and the obnoxious fans yell at the players as if they could go out there and do a better job. I'd like to see you try to beat them and get your ass whooped. Amirite?

It's not a matter of thinking you could do better, it's knowing that they're not good.

For example, I know I can't do better than Tim Tebow, but I know that he's not as good as other guys which therefore merits him being heckled as a glorified fullback.