Teacher: "If I gave you 2 cats and another 2 cats and another 2, how many would you have?" Johnny: "Seven." Teacher: "No, listen carefully... If I gave you two cats, and another two cats and

Teacher: "If I gave you two cats, and another two cats, and another two, how many would you have?"

Johnny: "Seven."

Teacher: "No, listen carefully... If I gave you two cats, and another two cats, and another two cats, how many would you have?"

Johnny: "Seven!"

Teacher: (sighs) "Let me try this one more time. Two cats... plus two cats... plus two cats. That makes—?"

Johnny: "Seven!"

Teacher: "Johnny, where are you getting the extra cat from?"

Johnny: (grinning proudly) "I already have one at home!"