Since this bug is about nicknames, I can give you a story about BB's. Before BB and D met, D was listening to a lot of punk records, and one of them was by the band Spitboy, from the rriot grrl days. This band has a song that goes something like "you think you know me, you don't even know, the color of my eyes." So during Katie and Dustin's first date, D realized he was going to need to remember what color this girl's eyes were, and they were/are a beautiful blue, and she looks very young for her age. So he called her BB for Baby Blue, and he has never forgotten the color of his wife's eyes because of what that song taught him.