Escher 9-109kb
Adam and Eve? and Carl-10kb
Porch swing-91kb
I hesitate to call an optical illusionist an artist.
Could be from 'The Forbidden Planet', maybe 'Monty Python', possibly Adam and Eve and the Giant Peach or my final guess Ron Jeremy's giving tree.
Porch swings died out as soon as everyone realized that their neighbors were jerks.