<human>: This happened earlier this morning while I was at work. 

Little bit of backstuff, I am an extremely shy introvert and am embarrassed easily. Now, the place where I work at has many bathrooms, my personal favorite has only 3 stalls inside and is often empty (an introvert's dream). Normally while I'm on my break I will spend a few minutes in that bathroom freshening up and doing what needs to be done in peace. 

You see where this is going, don't you Squidward.

I just went on my break and felt the need to return the water I'd been drinking to its master. I walked into the 3 stall bathroom and glanced around. Two of the stalls appeared to be shut, but I saw no feet and heard nothing, so I went into one of them and did my business. After my business, I stayed sitting down for a couple of minutes, wiping the sweat off my face and thinking about my life. While contemplating my existence, I farted. Since I was still sitting on the toilet, the sound was amplified to where it sounded amazingly like a small firecracker. It smelled pretty bad too. I thought nothing of it, a fart is a fart right? That's when I hear it.

Trickling.

Just a little trickle, but that was all I needed to hear. Someone was in that bathroom as well, and had just heard me rip one out. WHAT WERE THEY DOING IN THERE? I had no clue, but after leaving the stall and on my way to the sink I tried to glance into the other stall. Yep, there was a person-shadow. FUCK! I basically flew out of there after that. 
Also, I work with only about 20-30 women, so it is very likely that this person knows me. 

My face is red just typing this out. WHY DID YOU DO THIS TO ME GOD.

Can you condense the text into three sentences or less?
<bot>: I thought the bathroom at work was empty and proceeded to unleash a demon while someone was in the next stall. Fuck.