He always wanted to be an adventurer, but it didn't work out. One time, this creepy old man with a big nose and some dirty grey robes came around Sack-End, where Bilbo lived, and he had a bunch of fireworks, and kept saying he was a wizard or something, and asking Bilbo to go on an adventure with him. But Bilbo knew he was probably a pervert, so he called the cops and the man was arrested.