Jacksmart
When a guy acts like he's the cleverest person ever, just because he said something that made sense once. He drops a comment so good, it makes your brain feel like it's been crushed by a bulldozer.
Jack says, 'I knew this was going to happen,' right after you punch a wall.
He calls a loud sneeze 'a moment of greatness,' and you're just confused.
He says, 'I predicted this all along,' after you forget his name.