Why does B.B. King refer to his guitars as Lucille?

Answer 1

One night when he was playing somewhere it was very cold. Out on the dancefloor they burned fuel (garbage pale and kerosene) as heat.
2 guys started to fight one night over a girl. One knocked the other into the burning heat source causing the place to go up in flames, this was a wooden building. Everyone ran out of the building including BB. But then he realised he left his guitar inside, so he went back in.
The next morning he found out the girl the guys were fighting for was called the very one - Lucille.
So he called his guitar the very same name to remind him never to do something like that again.

http://www.YouTube.com/watch?v=EGsvAMRFivo&feature=player_embedded