If you start running your mouth, you'll do 2 things. 1) get better players watching you, to see if you're on tilt. If you're not, then they'll still see what kind of player you are more clearly then, and you'll lose out from that, but they won't care that you're running your mouth, and 2) players in it for the fun of it may get put off by the bad atmosphere, and leave.
So calling people donkeys or whatever tends to elicit the worst response from both good and bad players.
It's possible that you can make people expect you to tilt, and then catch them out, but since the main profit is from tapping up the pond life rather than going against the big guns, it's probably better to be polite. If you get a good hand and lose to a lucky draw, then a little NH may make them feel even better about being at the table, and hopefully they'll stay long enough to give the chips back