"This morning I was called smart ass and something else like that on the bowelcleanse forum."
The term "smart" can be interchangable with the word nice. Perhaps the poster didn't mean it the way I describe it but place this meaning in front of the other word and ooh la la Hanna. This may be a preferable interpretation on your part.
One way to respond and throw them into a new mindset is to say you prefer to be called gladass or better yet...happy bum. That outta cuase a paradigm shit.
There are alot of sick people running around the ol zone. Anger seems to be a big part of some people's illnesses.
You can only ever be insulted if you accept their pain body exchange. If you don't accept it as yours then it stays with them and they have to deal with their own incoehrency and disharmony. Like andreas says in situations like this. Stay invisible to them.