Fangunk

Fangunk is the fuzzy dust and debris that lines the screen on the outside of your room or table fan. Because it is such a pain in the neck to open up the fan and clean it, instead you wipe it down once a month with a wet cloth, or if you’re feeling especially industrious, you wrap a screwdriver with a rag and run it up and down the slats of the screen.

Or you forget about it completely until no air passes through the fan at all, starting an electrical fire burns down your house.