Watch American Dad! Season 18 Episode 3 Online. Best and Free Online streaming for American Dad! TV Show. We picked the best sites to stream s18e03. Simply pick a site below and click "Watch Now!" button next to it. Some of the links may be broken, please upvote the working and good links so other users see those links for American Dad! Season 18 Episode 3 s18e03 at the top of the list.