As a rite of passage, Melmacians have six months from their 233rd birthday to become a minister or become an outcast. Along with passing a test of knowledge, ALF must officiate over a ceremony. He ultimately gets the Tanners to agree to let him preside over the renewal of their wedding vows on their 22nd anniversary.
According to Barry, "he who burps downwind can party with me anytime." Barry also teaches that a red convertible is a token of undying love.
ALF's book about Barry includes a hidden picture and a maze.
(Episode: "Gimme That Old Time Religion")