They didn't want a piece of me. You should have seen me at the stadium a couple years ago standing in line for my garlic fries with my son. Three guys were behind me in line cussing like sailors. I'm about 245, give or take, and they probably outweighed me by about 100 pounds, each. I thought about asking them to zip it, but instead I said: I'm not crazy. I just gave them stink eye and put my headphones over my son's ears.
Well, there's a right way and a wrong way to do everything... I bet if you had said, "Hey guys... I know it's a game and all, but could we watch the language around the little guy here".
They would have oblidged... I curse all the time and I try not to do it around kids, but sometimes I'm just going to town, and if someone nicely asked me to stop, I would... If they were a dick, I might be inclined to be a shitbag and just start going in on them, but if they're polite and just watching out for their kids' ears, I certainly won't be a dick about it.