Hairs on Fire
You blow things way out of proportion and then it turns out to be nothing.
My hair was on fire when my dog ate my math test, but it was just a copy.
My hair was on fire when my friend said he was going to move, but he just said he was going to the store.
My hair was on fire when my mom said I was going to fail, but it turned out I just needed to study a little more.