People at my school call me "Lolita" what does this mean?

When I am walking to lessons some people say stuff to me like "hey Lolita, how's things" I don't understand, I googled it and all that came up was different films, the people are older than me, and I think they are friends with someone I know, and I know they cant be mistaking my name because my name is sophie and they sound completely different , I asked my friends and they didnt know either, any help would be greatly appreciated