I play solo alot, so I get paired with a lot of random people. I really can't stand the bad player who needs to curse after every bad shot (virtually all of them), like the result is shocking and unexpected. It's one thing for the occasional expletive when something abnormally bad goes wrong...but on every single shot...starts to wear thin.
While I do not curse after every bad shot, the first one I typically do not let one loose, but if I do the same mistake one-2 more times, I am guilty of letting an "S" or "F" bomb fly....just frustration...
As for things that annoy me but probably shouldn't...when people I am playing with say "good shot" after every swing even if the shot wasn't good...don't know why, it just annoys me...