We thought we hit rock bottom with intranasal leeches and intranasal teeth. But this is (amazingly) even more nauseating: paranasal sinus fungus balls. Apparently, it’s not terribly uncommon to have balls of fungus, often species of Aspergillus, grow in your sinuses. The fungus balls sometimes migrate around in there, and they can become a cause of sinus headaches. Luckily, they can be removed surgically with few side effects. Click through to the photo below… if you can stomach it. (You’ve been warned!)