Dodge those types of people!!! I go out to play golf for enjoyment, competition and to enjoy the people who are playing the game around me. If there is an idiot in your four it can be a right pain in the arse, I would go home pissed and take a week of because of it. I like playing with passionate fun people who love playing and enjoy good company. I was playing once and this idiot whispered in my ear before the 17th tee "don't shank it" and he kept on whispering "shank, shank, shank" after the shot I warned him if he does that again I will punch him in the nose, so he took up the challenge on the 18th and I dropped him.
After that he never did it again, lesson learnt. However this is not the best way to deal with these types so what is?