A little confused by the others explanation, Dib couldn’t help but tilt his head to the side slightly at the Irken’s words to him. "I thought Irkens only ate snacks though. At least, that's all I ever saw you eating at lunch during school." He wrote, not understanding how their food could be made from organic materials when they didn’t even have anything of the sort on their own home planet to begin with.
“Yesss…But how do you think the snacks are MADE though? And yes, Irkens only eat snacks...I'm going to miss Irken snacks. I'm already starting to run out of them!"
"Well, if they're made from different kinds of plants from different planets, wouldn't Earth snacks be basically the same thing as Irken snacks?"
"No way! You can't beat the amazingness of Irken snacks! But I'll try a few more Earth snacks when I need too. That choco-whatever stuff was okay."
"Chocolate. And I'm certain there are lots of Earth snacks you'll enjoy if you just give them a try. Have you even tried eating any other snacks in all the time you've been here? Most anything with sugar in it is probably alright for you to eat."
"I once tried waffles that Gir made ages ago. They were good until he decided to add some extra ingredients into them." Zim shuddered at the memory. "You'll have to show me some more snacks to try when you're better though." He pointed at the human as though making a commitment for him to said task.
Remembering that time he had spied on Zim just to see the other bring up everything he had eaten that morning, Dib cringed slightly himself. "W-Well, waffles aren't really snack food. So you can't say Irken snacks are better than Earth snacks until you've at least tried more of them. I'll bet you'd like cakes and brownies and other really sweet treats made on Earth though." He wrote to the other, doodling a few of said pastry items onto the paper they’d been drawing on earlier.
"Yeah, well we'll see. I'll have to be careful still. I’ve eaten a few things on this planet that have made me pretty sick in the past, but most of that was from the school cafeteria."
"Cafeteria food doesn't count as snack food either...What you need to eat are foods that are considered unhealthy for humans."
"Yeah, anything sweet and loaded with sugar will do...What snacks do you like then?”
"Hmm? Oh...Well...Actually, now that you mention it, I don't really know...I-I never really ate all too many sweets growing up, though I guess I have a preference for chocolate things like brownies and fudge. B-But that doesn't mean I'm opposed to eating other flavors too, like vanilla. I-I do tend to eat a lot of saltier snacks though."
"Hmm…To be honest, I'm kind of looking forward to trying a whole new range of snacks. You know, my favorite snack from Irk was made out of three different plants, all from different planets."
"Oh yeah? What was it?"
Zim looked thoughtful for a minute before taking the pen from Dib again. "It was like a pack full of weirdly-shaped, purple and pink squishy thingies...They were good." He wrote, trying to draw out what they looked like on the paper.
"So they were like some kind of fruity, berry-like snack? Or were they more like candy?”
"I don't know. I've not eaten fruit; too watery. Maybe if you tried one you'd know. I have some left over back at the base."
"B-But I thought you were running out of Irken snacks...I-I don't want to make you run out faster..."
“They will run out eventually anyways, so it's fine if you'd like to try a few things. It may be the only chance you get to try 'alien' food."
"But they're your favorite and you should eat them."
"Ah, come on, Dib. One won't hurt." Zim drew a small smiley face on the paper next to his words. "I don't eat that much anyw-" He quickly stopped and crossed that out immediately. "I mean...I'm sure I'll find plenty of Earth foods that I'll like." He tried to send the other a more sincere look now, not wanting the boy to worry about him.
Dib sighed at those words and the others attempt to cover up what he had really been about to say. "That's what you say now...I'm not saying you shouldn't try Earth snacks, but isn't there some way you can get Irken snacks from OTHER planets?" He asked, a part of him worried that the Earth snacks wouldn’t be enough to meet Zim’s dietary needs.
“Hmm...Well, I am still in contact with a Vortian prisoner who always sends me technology. Perhaps he might know where I can pick some up from...Or there is another Irken I know who I'm pretty sure would personally bring me some snacks himself. That idiot would do ANYTHING I tell him to."
"Hmmm? One of your friends then?"
“Pff… Heh, no! Just someone I've known since we were smeets: Invader Skoodge. I find him a little annoying, but I bet if I asked him to buy me a voot-load of snacks and bring them to my base, he'd go right ahead and do it...Well, assuming he's still alive, that is.”
"S-Still alive?" Dib looked up at Zim with some concern on his face. "D-Did something bad happen to him?" He asked, Zim’s rather lax demeanor making him feel just a tad bit uncomfortable, given their current conversation.