is this stupid or weird of my year 12 jumper?

so on the back of my school's year 12 jumpers, we can have whatever nickname we want. I don't want to put my last name because i don't think it's that nice. And so i'm thinking of putting my initial like J.STY but then thats not really a nickname. And i don't want people to like laugh at me and stuff, so what do u guys think?