It sounds like you might be referring to the iconic episode or perhaps the viral internet slang/meme associated with the show. Bannedstories 21 08 20 Angel Youngs Young Wild Work →
Here is a breakdown of why "Invader Zim Lab Hot" is likely pointing you toward the episode and the famous "Internal Organs" scene. 1. The "Lab" Connection: The Nano-Suit In the episode "NanoZim" (Season 1, Episode 2), Dib creates a nanoship to explore inside Zim’s body. To stop Dib, Professor Membrane (Dib's father) unveils a new invention in his lab: a nanosuit that allows Dib to shrink down and pilot a vessel inside a human body. Menschen A2 1 Lehrerhandbuch Test Modul 2
If you are looking for the specific episode with the lab and the intense internal heat, you want "NanoZim." If you are looking for fan art, you are likely stumbling into the deep corner of the internet where fans discuss the attractiveness of Dib or Professor Membrane