The teacher announces that she is going to hold something behind her back, and the students have to tell her what she has behind her back. First she holds a ruler and says, "It's long, hard and you can measure with it." A little girl stands up and says, "It's a ruler." The teacher replies, "Very good, I like the way you think." Then she holds a apple behind her and says, "It's red, round and you can eat it." A little boy stands up and says, "It's an apple." The teacher replies, "Very good, I like the way you think." Now little Johnny stands up and says, "Teacher I have one for you." Little Johnny sticks his hand in his pocket and says, "It's round, hard and has a head on it". The teacher screams, "Get to the office!" Little Johnny smiles and says, "It's a quarter | 
