The Thurman is easy to shorten, at least nowadays. Just add a thick drawl to the 'Thur' and say, "but everybody calls me Thor," and roll your eyes a bit. They'll laugh, tease you about it a bit because you got named after a comic book character, and then you won't be known as Thurman.
spoiler
I'm well aware that Thor did not originate in comic books. Thank you for reading my TED Sp(ew)Ed.
I knew a Thor in highschool. I think his name was actually Anthor? I could be wrong. Knew his brother also, named Mordecai. They had a lot more sibling I never learned their names. They were an...interesting family.