Where does belly button lint come from?
This is a 100 percent serious question, and I want the straight dope. Every night when I'm undressing for bed I stand in front of the mirror and wonder where belly button lint comes from. This is no joke.
What makes you think you have to urge me to be serious, Jojo? Your navel is one of the few places on your body where perspiration has a chance to accumulate before evaporating. Lint from your clothing, cottons especially, adheres to the wet area and remains after the moisture departs.