I'm sure this has been done before, but does anyone have any advice more constructive than "tell baby something along the lines of, "if you want to bite, we're not nursing." (kellymom) when they bite. DS is 8 mo and has 5 teeth and he's biting me more and more often. He just laughs if I tell him off. It has conicided with my return to work, is that likely to be a cause or am I just being a bit sensitive?