Addition

TEACHER: If I give you 2cats and another 2cats and another 2 cats, how many cats will you have?

Student: Seven, Sir.

TEACHER: No, listen carefully. If give you 2 cats, and another 2 cats and another 2 cats, how many will you have?

Student: Seven.

TEACHER: Let me put it to you differently. If I give you 2 apples, and another 2 apples and another 2 apples, how many will you have?

Student: Six.

TEACHER: Good. Now if I give you 2 cats, and another 2 cats and another 2 cats, how many cats you will have?

Student: Seven!!!

Angry TEACHER: Where did you get Your seven from?

Student: (Angrily!) Because I already get 1 cat for House!