Many people have nickname. Most people in fact. Many people go by shortened version of their own name or words that seem to have no connection what so ever.
Some people call me Stace. Not many. I find it a very personal jump to drop that 'y'. Sometimes I mark the progression of a friendship with that leap. And sometimes it comes from the wrong person way to soon. For example, if we work together and speak one or twice a month and you jump to Stace when you want to ask a favour - not cool. If you just met me, it is Stacey. If I don't like you, keep it to my given name please.
There are some people that I remember when they dropped the y. Mr Taylor from elementary school. He was the cool teacher, everyone's friend. I was in Gr. 6 and thinking about running for student council. He called me to his office to encourage me to do so and then as I was leaving he said "Good luck Stac." Mr. VanD in high school was very similar. I was at that school the moment it opened and apart of the student council my whole stay. He was another one of those teachers that really cared. He has certainly affected my life in a huge way. We got along from the beginning. He called me Stace and it created a bond that helped me through high school.
There are other nick names that seem to come out of no where.
There is a gentleman at work who is french and calls everyone baby. Not is a gross kind of way. With his accent it doesn't even sound like baby but his own little word for friend. Guys, girls, doesn't matter "Ok baby". Sometimes he even goes so far as to call me baby girl because he thinks I look so much younger than I am. Today he asked if my husband calls me baby. I said "he calls me lots of things, baby, babe and weirder things like Stac (with a hard c)."
For a very long time now Logan has called me Stac, and then it turned into Stax. This has morphed into many variations of those.
I have two other weird nicknames that are very person specific. My mom calls me Stacer and a friend from elementary school that I speak to only on our birthdays (hers is the day after mine - at the same hospital in the same year). She calls me Slater - always has.
I suppose I shouldn't have told this very kind gentleman this. Now he calls me Stac.