MAD AT THAT - Something stupid just happened, but you're somehow okay with

Something stupid just happened, but you're somehow okay with it, maybe even a little happy it happened.

My brother fell off a ladder. I was MAD AT THAT, but I still laughed.

My teacher gave me a pop quiz. I was MAD AT THAT, but I aced it.

My mom told me to clean my room. I was MAD AT THAT, but I did it anyway.