I can tell when someone comes up and says hi where they know me from if I don't remember them. In school I went by a nickname and since then I go by my legal name.
What's really confusing is when they call me someone else's name. I have had someone try to tell me they knew me even though they were calling me the wrong name.
My closest guy friends call me "Boach" which is a nice change from my former nickname which will remain unmentioned here. I hate it. All my nicknames have been a play off my last name.
Everyone at work calls me Jim...
You'll know how close of a relationship I have wiht you by the name you use.
What's really confusing is when they call me someone else's name. I have had someone try to tell me they knew me even though they were calling me the wrong name.