Watch American Dad! S05E18
Great Space Roaster
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. Roger struggles to get a grip on reality until a fateful turn of events helps put things in perspective.... (more) . You can watch American Dad! S05E18 here.