sentences:  The network's executives were receptive to the idea, which would be one of the main reasons Parker and Stone decided to sign on with the channel.The first episode of the series, "Cartman Gets an Anal Probe", debuted on Comedy Central on August 13, 1997, while Mr. Hankey debuted a few months later in the ninth episode, "Mr. Hankey, the Christmas Poo".The pilot episode received poor results from test audiences.