Yup. Worse, sometimes it is difficult to know how much is too much. Which amount of response is appropriate, not just what sorts of reactions are appropriate to the occasion.
I've thought of making a resolution to go completely dead pan this year but I don't know that is something I can keep up. I feel rather bad when it seems someone thinks her/his jokes are "cute" and I don't "share a laugh." The downside of not laughing is when he/she feels the need to explain the joke. I don't need an explanation and it is a good thing people can't read my mind as I think: monkeys. As for "celebrating" news with people, I take a stance as though dealing with children: "good for you!" The "copy thing" is a decent strategy, the problem I find is in reading what I am copying and dealing with "no,no,no." However, that can be kind of fun in situations, too, because it breaks up the conversation and you can just make them goofy by exaggerating what you think you should do - with any luck, they give up. Sad news is an "oh sh**" situation, best avoided. I've learned that "I'm sorry" are fine words in those situations as people seem to appreciate the lack of empty platitudes. So, I don't feel much in response, but I am a cool head and maybe just saying sorry and offering kleenex is exactly what people need?
_________________
Great spirits have always encountered violent opposition from mediocre minds - Albert Einstein.