How do those motherfucking valves work?

So I'm at work, learning, making and testing motherfucking asian noodles, and thinking of bikes. How many times do I pump up my tires and wonder " how does that fucking air stay in there?" "Who is this motherfucker that let's me ride my bike?"

If you're dying to know click the above title. If you're dying not to know then FUCK YOU!

MOTHER.