K-set - The gears on the back of the bike. They’re just gears. But t

The gears on the back of the bike. They’re just gears. But they’re the ones that make you look like a fool if they fall off.

My K-set broke. I had to walk. I hate walking.

My K-set fell off. I looked like a fool.

I passed my bike test. My K-set didn’t fall off.