How Much Is 2 + 2 + 2?

A math teacher was testing her school children

Teacher: Alvin, please answer this. If I give you two rabbits, and two rabbits, and another two rabbits, how many rabbits have you got?

Alvin: SEVEN!

Teacher: No, listen carefully again. If I give you two Rabbits, and two rabbits, and another two rabbits, how many rabbits have you got?

Alvin: SEVEN!

Teacher: Let's try this another way. If I give you two bottles of beer, and two bottles of beer, and another two bottles of beer, how many bottles of beer have you got?

Alvin: SIX.

Teacher: Good! Now, if I give you two Rabbits, and two rabbits, and another two rabbits, how many rabbits have you got?

Alvin: SEVEN!

Teacher: How on Earth do you work out that three lots of two rabbits is seven?

Alvin: I've already got one rabbit at home.

Teacher: #@$%@^#&$&*#$*#$@*~#