Blue Belly Button
A phrase used for when you notice you've been working at Best Buy too long, and you come home after every shift to find a piece of blue lint lodged in your navel.
Mother: What's that blue thing sticking out of your belly button, son?
Son: Ah, that's the dreaded blue belly button I always get now from working at Best Buy too long.
Son: Ah, that's the dreaded blue belly button I always get now from working at Best Buy too long.