That Happened
I got most of my education from what people like to call an "alternative school", which basically just translates to "school with no rules". We had 1 hallway, 60 students, and 4 teachers who we all called by their first names. We would often host community lunches, during which all 60 of us would squeeze into a single classroom and eat food that we had made.
During one of these lunches I was sitting with my girlfriend at a table that we had managed to snag from the crowd. We were talking, flirting, eating off each other's plates - just being real gross in general. There was a cup of water on the table and, assuming that it was my girlfriend's, I took a sip. I figured there wouldn't be a problem with that.
There was a problem with it.
As I took a few more sips from the cup, I noticed one of my teachers staring me down from the serving table. I caught her eye, confused as to why she was giving me such a dirty look, and lifted the cup to my lips once again.
This went on for a while, the teacher staring at me as I drunk self consciously. Neither of us broke eye contact. I figured it was the natural progression of our stare down when she began to walk towards me.
She was a small woman, but looming over me she seemed much bigger than possible. I placed the cup back on the table and craned my head up to see her properly.
After taking a few moments to assert her dominance, my teacher bellowed out the scariest words I have heard in my life:
"Why are you drinking from my mug?"
It's no surprise to me that my girlfriend broke up with me soon after that incident.