Warbler said:

sure it is accepted to riff and make jokes, but you sounded like you'd be making fun of sports, watching sports, and sports fans and the like. That would annoy me while watching sports. Maybe I am weird that way.

You just read too much into it.

Sorry if this may sound brusque, I'm not mad at you, I'm just explaining, but.... I'm not that much of an asshole that I'm gonna make fun of sports fans, or the whole watching sports on tv, WHILE I'm with them and they're trying to have fun. I would do nothing to would spoil MY FRIENDS's fun. If I understand they're not pleased with my behaviour, I'll stop, and let them have their 90 minutes of relax.

Otherwise, if the atmosphere is right, we'll all joke about dumb things commentators say, dumb advertisement breaks, players' goofy faces during the slowmo replay, jackasses in the stands.... the works.

The key thing is I do these things with my friends, with people that know me. I'd never think it wise to just pop up in a random bar and laugh my ass off, alone, while strangers try to watch a game. I'm not a sports fan, but, again, I'm not that much of an asshole.