A Jacob is a furry roleplayer who has violent tendencies and uses the Bible as an excuse for his actions. A Jacob is the type of person to repeatedly kick people under tables in the library after having a deep conversation about boundaries. Even though he's unbelievably weird everyone loves him and would throw hands with anyone who crossed him.
Person one : "This guy said he was going to stone me in the name of the Bible. He looks like he vapes."
Person two: "Oh that's Jacob."