Sorry I forgot you guys are never mentally phased and have nerves of steel.
The more u can put thoughts in a competitors head, even if he is thinking 'this guy is a plonker', the less he is able concentrate on his game
On one hand you say you do this to get inside someones head, then on the same thread you say you would laugh at someone who did it to you and then you go on to have an issue with someone saying that they wouldnt be phased by it. Do you have some multiple personality disorder or something?
So which is it? Or are we just meant to believe that you are the only one with this steel trap of a mind and the rest of the golfing world should tremble at the mere mention of your name? Coz, erm well...no.
Personally if someone said good-good to me on a 6 foot putt I'd take it as you conceding my putt and then watch you attempt to putt out.
Offering good-good to me says you are not confident in your putt and it would give me more confidence not less. This childish attempt at trying to get inside my head would also leave me thinking that you are a bit of an idiot to be honest and I would waste no more time thinking about you and go back to playing golf.