Erm... On the internet, people often shorten my username to Noct. I quite like it, It doesn't sound right when I say it, but it looks quite nice to me typed.
In real life, quite a few people have nicknames for me, some change frequently, some stick:
Jesse: My boyfriend started calling me this about 5 weeks ago, because I remind him of someone on Dirty Sexy Things. I've been meaning to look him up to see if he's being cruel or kind to me.
Noct: spill over from the internet.
Alice: Both a reference to a character in my novel and my VERY feminine nature.