Hi! This is my first Invader Zim fic. Please review!

GIR was in another of his "stranger-than-usual" moods. Jumping round the house, yelling "BLLLLLLLLLLLLLUUUUUUUUUUUUUUUUEEEEEEEEEEEEEEEEEEEEEEEEEEE CHHHHHHHHHHHHEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEESE!" It wasn't surprising that Zim woke up earlier than usual.
"GIR-CUT-OUT-YOUR-UNIMPORTANT-TALK-ABOUT-CHEESE-AT-OOOOOOOOOOOOOOOOONNNNNNNNNNNNNNNNNNNNCCCCCCCCCCCEEEEEEEEEEEEE!" GIR paused and looked at Zim.
"Doodie." GIR then ran into the kitchen. There was silence. Zim liked silence. It allowed him to think...WAIT! SILENCE? That could only mean...THE DOOMSDAY DEVICE IN THE LAB!
"GIR! GET AWAY FROM MY DOOMSDAY DEVICE!" GIR smiled at Zim in an odd way, then started banging his head against buttons.
"WHAT THIS DO? WHAT THAT DO? WHAT THIS DO? WHAT THAT DO?"
"GIR-GET-AWAY-FROM-MY-DOOMS..." At that point the phone rang. Zim glowered at GIR. "Don't touch the doomsday device, GIR."
"Okie-dokey!" GIR saluted as Zim left the lab. Zim picked up the telephone.
"What do you want you puny earth creature?"
"Hello! You have won our annual prize draw..."
"Draw? I do not recall entering a draw, but never mind! What prize have I won?" Zim did not know that the message was prerecorded.
"...or our silver prize of a watch..."
"Wait! What was the gold prize? You humans always refer to silver as second best, and so the GOLD prize must be a prize of unimaginable..."
"...to see if you have won, call our hotline on..."
"EARTHLING! I WISH TO KNOW THE GOLD PRIZE!"
...94263. Calls are charged at..."
"FINE! If you will not tell me the gold prize, then I must steal it. Tell me where this prize is hidden!"
"...this call cost 3 pounds a minute. Goodbye!" The message stopped. Zim glared at the phone with contempt. Suddenly GIR's voice resounded around the house.
"OOOOOOPPPSIE! CHICKEN!" Zim raced down to the lab to find a mutant chicken prowling it with GIR perched on top.
"GIR! Stop playing with the experiments and do something useful!"
"I'LL MAKE COOKIES!"
"NOOOOOOOOOOOOOOOOOOOOOOOOOO!" Zim attempted to grab GIR as he passed but missed. Zim raced up to the kitchen to find that GIR had already started the cookie-making process. Zim raced up to GIR, but slipped on the floor and fell into the dough.
"ZIM COOOOOOKAAYYYYYY!" GIR screamed happily.
"Zim, I did not come to this planet to be TURNED-INTO-A-COOKIE!" GIR ignored him and started doing whatever it is you do to make a cookie (I have made cookies before, but I can't remember how I made them, OK?) before throwing Zim and the cookie dough into the oven. Zim squirmed, but the dough held him fast. GIR bounced around the kitchen before finally turning the oven up to 250 degrees fahrenheit.
"GIR! Get me out of the oven now!"
"Zim cookay!"
"NO! No Zim cookay!" GIR suddenly paused and opened the oven. Zim was relieved to find that GIR had given up on a Zim cookie.
"ZIM COOKAY WITH CHOCOLATE CHIPS!" GIR threw the bag at Zim and shut the oven again. Thinking fast, Zim drew out his cookie shaper and cut up the dough into cookie shapes, before flinging open the oven and shutting it just as the chocolate chip bag exploded. Zim collapsed on the floor. In almost no time at all, the cookies were ready. Zim shoved the cookies into a box.
"GIR! We're going to sell cookies so that I can earn money to purchase goods on this planet!"
"Zim Cookay!"
"Yes, GIR, Zim Cookay. Now let's go!"

TA-DA! I know it seems unlikely that Zim would sell cookies, but Zim has just had to put up with all of GIR's wierdness, so he's not thinking straight. Review please!