Getting way off topic, but if you hit ordinary peanut butter with strong light, it glows afterwards. Go into a very dark room, adjust your eyes to the dark, look away with your eyes closed/covered as you hit a jar of peanut butter with a camera flash (not the household item it once was, sadly), and then look at the peanut butter. It's glowing!

I heard this on the Internet and didn't believe it, but tried it for myself, and yup. It glows.