BEing called a fish

I got cold-decked tonight for all of 45 minutes or so (while in the midst of a downswing) and this guy at my 6-max table starts talking smack. Telling me how bad I am and thanking me for my money. Usually its no problem, but this time, I'm already a little annoyed at running cold. So I make some adolescent joke about putting the screws on his mom. Anyway, this keeps up. So I switch seats to his left and start reraising his raises with anything decent. Anytime I lose he thanks me for my money. I end up positive at the table, he breaks even after being up huge. Point is this: If it annoys me to that point at a level where I am not out of my league (.5/1), its got to kill an unsure player. Don't know why I felt the need to post this, maybe to stop some of the belligerent of us.