Hairs on Fire
You're so busy or stressed you feel like you're going to explode like a firecracker.
My hair was on fire when I had to do my math test, my chores, and help my sister with her science project all at once.
My hair was on fire when I had to work two jobs and finish my essay by midnight.
My hair was on fire when I tried to cook dinner, answer my phone, and watch my favorite show all at the same time.