In the last episode, the crew of a steampunk flyer stuck a flag in the breast of an enormous woman lounging on the surface of the moon. In this episode, that same crew gets sucked into a crack in the deflating breast, only to discover that the inside of the giant woman is trippier than they imagined. 

(Heavy Metal issue #38, May 1980 – Page 29 Professor Thintwhistle by Lupoff and Stiles)