Ok, I'l try to keep this short.
BBS is MajTom (David Bowie) but I fly under AirScrew. When I first signed up I had wanted to use the nickname I had for long time from Mountain Home AFB, Trigger (long story about that one, lets just say it involves a M16 and a portajohn).
Then I tried MajTom but it was already taken, so I tried Maj Disaster but too long or else someone already had that too. Finally got MajWreak, thought that would be cool. After my two weeks were up I messed up the account and had to pick another name.
I was a dental tech for 20 years in the USAF. One of my many additional duties was Flight Dentistry NCO, I worked with the Flight Medicine guys to schedule pilots dental exams and work around the flying and training schedules. Anyway we always referred to the pilots as Wingnuts and Airscrews. Wingnuts was taken already and also Propnut and Propwash. So I settled on AirScrew.