I can picture it in my mind. Nick's agent was walking the quiet streets of Lombardy, with a question on his mind. What can we call this boy so that everyone will love him? Slash is already taken, Alice Cooper is too 80's.
Then the moment of truth!
"I've used these needles for thirty-seven years I don't need your hook!"
"I've made seven thousand pair of socks and dolls using only the hook! Who needs a needle?"
And this a legend is born!
Disclaimer: And for anyone who wants to argue that it's his real name and not some stage name. I really don't know because I don't follow boy bands. But if that is the case, please re-read this post replacing agent with parent and we'll all be square.