Here are my favorites -
*gasp* It's got chicken legs.
I had no idea.
Thank you, I, I love you.
Someone needs a hug!
Awww, your little robot boy's broken.
Hehe, duty.
Doo dee doo dee doo dee doo dee doo dee doo dee dooooo.
Cows are my frieeends.
I like dooky!
I need tacos, I need them or I'll explode. That happens to me sometimes.
Hi floor, make me a sammich.
Your progress has been stupid. You methods are stupid. Your intelligence is stupid.
He's gettin' eatin' by a shark.
Yay! I'm gonna be sick!
I had a coupon!
Where are my walnuts?
(Dib says "Are those walnuts?") My walnuts!
Moosey fate. Say moosey fate.
Me and the squirrel are friends.
Let's make biscuits! (in a deep voice) Let's make biscuits!
(ZIM says "...but it belongs to the Dib human.") So he seems nice!
But if the big splodey goes fast, won't it get all bad? *cries, then receives lollipop*
And I'm! Haha haha, I don't know.
Your head smells like a puppy.
To make room for the cupcake.
To make room for the tunaa.
Why iss his head so big? Why is his heaad so big?
I made it myself!
YOU GOT A PIMPLE!
Just like on T.V.
I'm gonna watch it again!
Why?! Why my piggy?! I loveded you piggy, I loveded you-hoohoo.
YAY! It burns!
Who is it?!
You got any of them taquitos?
Chicken. Hehehehehehe, I'm gonna eat you.
The plug thing, it's not plugged!
It's me! I was the turkey all along!
I was the turkey! Meeee!
I like you.
You gonna make biscuits?! You gonna make biscuits?! You gonna make biiisscuits?! You gonna maake biiscuuits?! (ZIM says "No, never. I never want you to mention biscuits ever again.")