As an aside I never know what to abbreviate you name as; Ugly? USa? Sassy? Animelover53? They all seem wrong.
The game the nickname started in people used Ugly, Sasq, Sas, and Uggs. I've always been partial to Ugly or Sasq. Really don't like USa so I'd suggest using that.
You could call me Melon. That was a nickname i had when i was about 12. Or Blinky Jacque. Had that when i was about 4.