Yeah, it's annoying as fuck. I mean, there's a difference between noticing something legitimately funny going on, and talking shit for the sake of talking shit. Granted, I used to have a similar problem, but after listening to other people do it, it got on my nerves enough that I decided to stop.
I know some of this people. I don't care if they can't stop shit-talking, but I absolutely hate their need to judge everything. Who the hell are you to judge? And why do you even care about what other people do? Why can't you just shut up and keep these thoughts for yourself?