Well, when I was really little my dad would call me "Amazing Amy" only, being like 4, and in the tone of voice he said it, and not knowing what amazing meant, I would, or so I am told, get really upset and yell at him to stop calling me "mazin amy." so christmas 99, what does my dad hand me grinning like the cheshire cat? A doll called Amazing Amy. It was hysterical.
My friend Didi from High School took to calling me AL (my initials) since there were always like 6 other Amys. To this day she calls me Al, never Amy. Other people hve tried to call me Al and it just didn't work, I didn't even respond, but from Didi, its natural and works.
My Aunt calls me AmyGirl, has since the day I was born. Mail from her comes addressed to AmyGirl L... even.
My nephew's name is Nicholas. I've called him Nicky Pickle and Pickle since he was a baby. He's 7 now, and loves to sing and dance and make up songs. The last time I saw him and said come here my Pickle, he stomped his foot and said, my name isn't Nicky Pickle, Its Nicky Martin. OMG, We were all laughing so hard, it was hysterical.