S2·E21 Episode 21
Aired February 10, 1972
Synopsis
Guests stars Sandy Duncan. Jim Nabors and Slappy White. Flip and Sandy Duncan play with Flip's invisible dog. Flip starts a song but Slappy takes over. Sandy solos "Inchworm" then Jim Nabors joins the rest for "Anything Goes." Flip shares a funny ghost story about his friend Deke.