A cannon to a pebble
You’re making a mountain out of a molehill, and you’re doing it with a lot of swearing.
He turned a tiny comment into a full-blown argument. I told him he was a cannon to a pebble.
She made a big deal about me not cleaning my room, even though I had only one sock on the floor.
My brother got angry because I said he was a little lazy. He yelled at me for 10 minutes.