Teacher: If I gave you two rabbits, and another two rabbits and another two, how many will you have?
Johnny: Seven, Sir.
Teacher: No, listen carefully. If I gave you two rabbits, and another two rabbits and another two, how many will 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 will you have?
Johnny: Six.
Teacher: Good. Now if I gave you two rabbits, and another two rabbits and another two, how many will you have?
Johnny: Seven!
Teacher: Where the hell do you get seven from?
Johnny: Because I *smile* have one at home.