Start with a bag of Orville Redenbacher’s Tender White microwave popcorn (or air popped popcorn if you’re feeling especially virtuous). Shake on some Parmesan cheese. Eat.
Sometimes I have been known to also add a couple of dashes of jalapeño flavored salt. You can find it in the Mexican section of your grocery store. Warning! Está muy caliente! (Translation: It’s not for wimps!)