We use the same words but give them different meanings. Usually in a session unless you are a pain in the but you are the receiver not provider of pain so to me good or bad pain are in relation to me not to the mistress.

It is more related to the type and place of the pain and that makes it good or bad. I am not insensitive to the likes of the mistress but if I get it to me it means she likes it or at least she does not dislike it.

Now if having a bone broken or a teeth extracted can be a good pain for you because your mistress likes it you are a better man than me.