I just told my mom today (or, technically, yesterday) about a past decision I've made. She's not proud that it happened but she is glad that it happened in such a way that I will have pleasant memories.

Sometimes, your parents will surprise you, that's all I'm going to say. Either you'll expect calm and get fury, or you'll get calm when you expected fury.

EDIT: For future reference, you may want to put something like this in EoEo so that you'll be taken completely seriously