Almost unintentionally drained my 12V battery

So I went outside and noticed that my Prius lights were on, car locked and light switch set to Auto. It's been on for 14 minutes before I noticed it (according to my 12V battery monitor). Wondering what happened, I have a theory.

I went outside earlier (safe to say. 14 minutes ago lol) to close the windows that I open when the car needs a good charge, it's sunny and warm/hot outside. Instead of getting in like I usually do, I just put my head through the driver's opened window, press the Ready button twice to put the car in On mode with the fob in my hand, pulled all the windows button and right after, pushed the Ready button to turn off the car and finally, locked the car. I guess that's enough to have the lights remaining on? Now I won't do that again lol.