Blues triva came to mind from listening to B.B.King and Bobby Bland bantering while jamming (1974; "Together for the 1st Time - Live": side 3 titled "medley"). King leads off ribbing how "Bobby, he's a little bit jealous ... I ain't no refrigerator, I can't keep nothin'...." Several minutes in Bland reminisces how in 1949 when King hosted him on the radio play time was so short & King deadpans he wasn't born yet.
King was a disc jockey in Memphis at station WDIA. His handle was "blues boy" King - which became his moniker of B.B. King.
B.B. King tells in song about when he named his guitar "Lucille". When playing at Twist, Arkansas, a woman instigated a fight that knocked over the heat "tank" [barrel] causing it's gas to run over the floor. He says the "... building caught on fire ... almost burned me up." Lucille was the name of the woman who started the fight.
[B.B. King also credits "Lucille" for saving his life. In a vehicle accident when the car he was in stopped flipping over it fell on Lucille, which held the wreck off of him.]