<human>: This happened literally a few minutes ago.

I'm travelling home by bus, and it's quite a long trip. I almost always remember to do my pooping and urenal business just before the bus ride, but today I was in a hell of a hurry and forgot to take a piss before stepping on the bus. 

An hour went by and my urge to pee was unbearable. I know that the bus' bathroom is small and almost impossible to pee in. But I really had to pee, like really bad. So I did what I had to do and went in the bathroom. The door lock wasn't in the best condition but managed to lock it, or so I thought. 

Pulled my fly down and started to do business, when suddenly..

*A HUGE BUMP*

I was losing my balance in the middle of the stream and leaned backwards hard against the door, which opened and I fell on my back.

So there I was, lying on the bus floor with my dick out, my pants and lower shirt covered in piss, everyone watching me in confusion.

Not my best Friday the 13th. Everyone's still watching me.

Can you give me the gist of the text in a nutshell?
<bot>: Fell on the bus floor while peeing because I lost my balance and the door opened when I leaned against it, which lead me covered in piss.