Seven cats 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 another two, how many would you have?"" Johnny: ""Seven."" Teacher: ""Let me put it to you differently. If I gave you two apples, and another two apples and another two, how many would you have?"" Johnny: ""Six."" Teacher: ""Good. Now if I gave you two cats, and another two cats and another two, how many would you have?"" Johnny: ""Seven!"" Teacher: ""Johnny, where in the heck do you get seven from?!"" Johnny: ""Because I've already got a freaking cat!""