Top Definition
Professor Membrane is an awesome scientist in the best show ever to come out of Nickelodeon, "Invader Zim". He is the father of Dib (Zim's arch-nemesis) and Gaz. Unfortunately since evil Nickelodeon cancelled the show we will never find out more about this eccentric randomly yelling scientist guy. Professor Membrane is also know for the creation of "Super toast" which sounds pretty awesome to me.
"Not now son, I'm making TOAST!" -Professor Membrane (exclaiming to Dib)
by invader_adie October 22, 2009

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