Ms. Bitters forced the class into group projects... And didn't give anyone a choice of who they wanted to be with. She ended up pairing you with Zim...

It was a project you two had to get done by tomorrow, so you guys had to hang out after Skool. No WAY was Zim bringing you over to his base, GIR was acting all whiny today because Zim hid this noisy toy he somehow found...

So here you two were, in your room, making a poster.

You two finished the research stage, so now you were on the "putting everything onto the poster paper and make it look nice" stage. You didn't want it to be completely silent since it'd be awkward, so you started talking about something. What you said, didn't really matter, because when you asked him something after speaking...

Zim: "...Huh?"

He did not hear a SINGLE word you said.