April Fools?

This year April Fools Day is on Easter Sunday. I am an atheist, so that makes me laugh. But the thing about it is that my dad's parents are extremely religious.

I walk into the kitchen, and my dad is taking a ham from the oven.

"Are we taking that to Sittoo and Gidoo's?" I ask him as I sat down at the table. He looks at me, confused.

"Who are they?"

"Our grandparents."

"I never had parents," he says gruffly. The blood in my veins stops running. I look him in the eyes and try to figure out what's going on. My sister comes downstairs and joins the conversation.

"I knew they were robots!" My head is whirling with confusion. They are real!

Then I remembered and rolled my eyes.

"Haha," my sister said. "April fools."

"What's April fools?" my dad asked, and started to stir some pancake batter.