after I negative rep them? If I negative rep you, why would I want to talk to you?

This jackass goes and puts his 2 cents worth in on about 10 threads in the forced induction section this morning. A few things he said were stupid, some re-stated what everyone else said, etc. So I gave him some red. What can I say, I was bored, he bumped a lot of threads, it was just right . Anyways, he then replies to my post calling him dumb saying he might be dumb, but he's faster than me, and if he isn't then he will have a build that is "somewhere ass" ... not too sure what that means, but it's whatever.

Just thinking though, why do you PM me when I negative rep you?