american dad season 4 episode 18. Hello there American Dad fans, welcome to yet another enjoyment of the American Dad Episode, The most recent for the American Dad is the Weiner of Our Discontent American Dad. In this episode, Stan has had enough of Roger’s antics! When he calls Roger out, Roger claims he has been sent to Earth to determine the fate of mankind. Stan challenges him to prove it, and is tickled pink when he learns Roger’s real purpose for being on Earth. Watch Weiner of Our Discontent American Dad Online Streaming free.