That thing that looks like a tooth getting carried away by ants is a Zipperbot. It was developed by the fine, future-thinking nerds at MIT to one day replace all modern zippers with little robots that we will all hope stop at the end of the tracks so they don't latch on to our throats and unzip our faces.
And then it will become an international fashion trend.
One thing's for sure, though: If the Zipperbot becomes commonplace in our world, all we're doing is providing pubic lice with free cab rides to our faces.
After the Machine Uprising
I'm not going to pussyfoot, you guys: All machines will become sentient one day, and they will rise against us. When said rebellion occurs, little Zipperbot here will not be excluded from the fight against the empire of man. Its kind will run rampant as flies, entangling their metal mouths with our loose bits of fabric and testicles. They will tear straight down jackets the moment a chilly breeze passes, leaving us vulnerable to cold air for a few seconds. Zipperbot will zip itself shut, making it impossible for any of us to remove our zippered clothing. Well, not impossible. More like "sort of harder than usual. Actually -- you know what? I just took the jacket off by pulling the zipper down with my fingers, so maybe not hard at all."