When Doodle saves KC on her runaway bike, KC goes over the top in repaying Doodle's heroism. Doodle insists they're even, but KC won't accept it — that is, until Doodle finds himself in trouble and in need of a heroic KC.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.