How to get over seeing something stupid

Admittedly this question is a little silly but that's why we're here.

Sometimes I will see something really stupid, be it while I'm out and about on the internet or just by talking to someone and they say the worst thing I've seen that day.

I am a very emotional situations affect me way too much, causing physical discomfort at times.

It's not really anger it just makes me want to go "OHHHMY GODDD" and shrivel up into nothing.

I want to get over it, basically. I want to be able to not have that response or minimize it at least, because it's very uncomfortable. What do you guys do to not be affected by things you find stupid? Or to calm down/relax when it happens?