No Interruptions, Please?

I look down at my computer, my fingers itching to type. I flipped the sign on my door that says No Interruptions, please! I sat down and went to typing.

A couple minutes later I felt a tap on my shoulder.

"What?" I asked without looking at the person.

"The dog vomited," it's my little sister.

"I don't care," I got up and shooed her out.

A few more minutes passed.

"The dog's asleep," it's my little sister AGAIN!

"I don't care," I shooed her out AGAIN!

She left but was back in a few more minutes.

"The dog's not waking up," she said.

"I don't care," I went to shoo her out but then the words registered. "WHAT?"

"April's Fool!" she screamed.