Not intentionally, no. I would be the first to admit that it has happened to me a fair few times; that someone's got mad at me when I was just being cheeky or playing devil's advocate...I *always* put :P when I am doing this, meaning I am being cheeky, or teasing but sometimes people overlook that.
I do accept, in answering this, that it is much harder to gauge intent behind the written word online and on sites like this. SO people can, and do, get the wrong end of the stick sometimes and get mad for no reason.
"Ok ok I was just trying to be funny!" Everybody might just have a different kind of sense of humor and some people hardly any at all and some people are cute when they get angry.