So in Harry Potter and The Half Blood Prince, Harry had to borrow Ronald Weasley's potions book to prove a point to Professor Severus Snape. When Harry gave the book to Snape, Snape noticed that in the cover it said the owner of it was "Roonil Wazlb". When he asked Harry what this was, Harry lied and said that it was his nickname. This is a funny thing that I found on the internet Take note: this did not actually happen in the story
