<human>: Can you succinctly summarize the text in 1-3 sentences?

This fuck up happened about two years ago but reading through other TIFUs, I was reminded of it.

I used to work at a certain fast-food chicken establishment (which is an oxymoron, by the way). Typically one would wear non-slip shoes at this kind of job, but mine had holes in them and I was poor so I wore my Chuck Taylor's. I did this for months without incident. 

One day while I was working, I got very bored. It wasn't a particularly busy time of day for chicken, so I leaned against the counter with nothing to do. My cousin worked with me as my shift manager so from time to time when the place would slow down, we'd fuck with each other: packing an unnecessary amount of sporks into each other's purses, throwing jelly packets at the cooks, pouring salt down other employee's straws. You know, typical goof-off shit. 

In this manner of tomfoolery, my cousin then throws a potato wedge box directly at my head and takes off into the back of the store. Seeking sweet revenge for my face, I grabbed another box and chased after her around a freshly mopped corner. My legs swept out from under me and I landed with equal force on my hip and my chin, my chin landing on the corner of a tile. As I fell, I threw the box at her and made contact with her side as she turned around to laugh at me.

Obviously, it was my own fault that my chin was now bleeding profusely, so I didn't report it. Though, looking back, I should have gotten stitches or at least used a bandaid.
<bot>: moral of the story: wear your non-slip shoes when it's a requirement. I still have a scar.