You gotta love him!
Teacher: If I gave you 2 cats and another 2 cats and another 2, how many will you have? Johnny: Seven, Sir. Teacher: No, listen carefully... If I gave you 2 cats, and another 2 cats and another 2, how many will you have? Johnny: Seven, Sir. Teacher: Let me put it to you differently. If I gave you 2 apples, and another 2 apples and another 2, how many would you have? Johnny: Six. Teacher: Good. Now if I gave you 2 cats, and another 2 cats and another 2, how many would you have? Johnny: Seven!!! SIR!
A very angry Teacher: Where in the heck do you get seven from?!?!? A very angry Johnny: Because,.... I've already got a stinkin' cat!!!