Nickname Guera

So the other day I was talking to David on messanger and he's like what do they call you in Mexico? And also when I meet people they say okay your name is Sharlene and what are you called? For me both of these questions were really weird- obviously I am named sharlene and they call me, well Sharlene. But then I came to realize how many people go by nicknames and how many nicknames I have. Beside the fact that some people call me Charr, or Char-len-ay or Char-len because of the spanish accent everyone also calls me guera (pronounced gWeda) which means Blonde. Also guerita (blondie), chaparrita (shortie), cuerita (cutie). Its so funny. A LOT of guys here go by Pancho, Pepe, other nicknames and their name has nothing to do with those names. its funny.