Mostly being far too noisy, even though i use headphones, i 'drum' on my desk, woop, and shout and 'sing' along to songs i particularly like. I had not realised that the sound would carry through the walls and upstairs into their bedrooms.
Once she posted me a note telling me that she could hear everything, i made a huge effort to quiten down on my next binge, but that was when i ended up having a KO and 'coming to' in a very bad way the next day, and causing a right rumpus. I promptly got a letter asking me to make an appointment with a Dr to assess my mental health.
I suppose i can see why my neighbor might have thought i was going insane, but it was just the GBL, and the GBL only. When i'm not on that I'm generally very quiet and calm, admittedly too much GBL seems to turn me into a bit of a raving lunatic, but it's all great fun at the time.