From a reader who goes by grunzen:
I heard you talk about booing in your podcast and you mentioned Santa Claus getting booed by Philadelphia's notorious "boo birds." I think I can do you one better. In ESPN's "30 for 30" documentary on the Baltimore Colts marching band [The Band That Wouldn't Die, directed by Barry Levinson], they mention how they were going to take the field before a Philadelphia Eagles game and that they were scared. This was because just prior to that, they had booed a little kid that had missed four passes in a contest. Now I can kind of understand booing some scraggly, disheveled Santa Claus (they mention this in the documentary). But a little kid in a contest? That's the most extreme booing story I've heard.