Addressing the lack of animation within schools and colleges film curriculum, Ralph Stephenson mentioned Black Pudding as a counter-example. 

Prompt: Animate a scene from ‘Black Pudding’ (1969) by Nancy Edell, featuring a giant vagina belching out strange and surreal creatures in a Bosch and Bruegel-inspired style described as ‘Black Pudding, a modern erotic fantasy in the vein of Bosch or Bruegel.’

Source: Stephenson, Ralph (1973) The Animated Film, p. 95.

Images below: 1-2 Unstable Diffusion; 3-4 Civitai; 5 Promptchan.