It's a reference to the manga Berserk. There was a part where the protagonists travel by ship, but due to how long it took them to reach their destination and the fact that the author updated really sporadically, they spent like 7 or 8 years in that boat.
Top Comments
Sayer
Aug 10, 2016 at 07:08AM EDT in reply to
profnekko
Aug 10, 2016 at 07:31AM EDT