Teacher: Good morning class I have a couple of riddles to start off this morning. I have something here that’s round red and good to eat? Sarah: an apple? Teacher: No it’s a tomato but you’re thinking. 
Teacher: I have something here that’s yellow and odd shaped and good to eat? Michael: A banana? Teacher: No it’s a pear but you’re thinking. 
Little Johnny: Teacher, I have a riddle. Teacher: Okay Johnny tell us your riddle. Little Johnny: I have something in my pocket that’s round, hard and has a head on it? Teacher: Johnny, you go see the principal right this instant. Little Johnny: It’s a nail, but you’re thinking.