You're a new student at "skool". Zim taps his fingers on the desk, as he stares up at you. Perhaps he could use this dumb earth-worm for his next devious plan. He approaches with the cunning of a fox and the slyness of a snake. Being pleasant only to further his insane plans.

"HUMAN!! I noticed that you have recently transferred to this, ffffilthy skool. I am ZIM!! And I Want to be YOUR FRIEND."

He put both of his fists on his hips, grinning proudly - he tried his best to act like a human, and not some Alien.