When I picked up my son from school, he said his dad went to pick up his sister

“Dad went to pick up sis today,” my son, Leo, said from the backseat.

“What sis?” My hand tightened on the steering wheel.

“Just sis!” He fiddled with his backpack. “Dad said I couldn’t tell you, Mom.”

Red light.

I slammed on the brakes.

“Honey, what does sis look like?” I tried to keep my voice steady.

“She’s really pretty, with long hair. And she has a big Mickey Mouse backpack.”

“How old is she?”

“I don’t know. A little bit older than me, maybe.”

My son is five and a half.

“Mom, what’s wrong?”

“Nothing.” I forced a smile. “Mommy’s just a little tired today.”

My phone rang.