Two college basketball players were taking an important final
exam. If they failed, they would be on academic probation and not
allowed to play in the big game the following week.  The exam was
fill-in-the-blank.

The last question read, "Old MacDonald had a ________."

Bubba was stumped.  He had no idea what to answer.  But he knew
he needed to get this one right to be sure he passed.

Making sure the professor wasn't watching, he tapped Tiny on the
shoulder.  "Pssst.  Tiny.  What's the answer to the last
question?"

Tiny laughed.  He looked around to make sure the professor hadn't
noticed then he turned to Bubba. "Bubba, you're so stupid. 
Everyone knows Old MacDonald had a FARM."

"Oh yeah," said Bubba.  "I remember now."

He picked up his No. 2 pencil and started to write the answer in
the blank. He stopped.  Tapping Tiny's shoulder again, he
whispered, "Tiny, how do you spell farm?"

"You are really dumb, Bubba.  That's so easy.  Farm is spelled
E-I-E-I-O."