The Test

Johnny was taking an exam. The exam was fill-in-the-blank. The last
question read, "Old MacDonald had a _________."

Johnny was stumped. He had no idea of the answer. He knew he needed to
get this one right to be sure he passed. Making sure the teacher wasn't
watching, he tapped Jane on the shoulder. "Pssst... Jane. What's the
answer to the last question?"

Jane giggled and looked around to make sure the teacher hadn't noticed.
"You're so silly," she whispered. "Everyone knows Old MacDonald had a
farm."

"Oh yeah," said Little Johnny. "I remember now." He picked up his pencil
and started to write the answer in the blank. He stopped. Reaching
forward to tap Jane's shoulder again, he whispered, "How do you spell
farm?"

Jane rolled her eyes. "That's easy... E-I-E-I-O."