This tribute to M.C. Escher by Katsuhiro Otomo (of Akira fame) gets me every time
@jack for all the times I've seen this, I just realized that's the robot's own head it's holding.
@jack That is quite a remix. Wow! From Shakespeare to Douglas Harding into uncertain future.
@jack When I thought I had got it already... no, wait a minute, aha!
@jack ugh , otomo , my favorite illustrator ever...
@jack #AltText A black-and-white drawing of a reflective sphere being held up in a robotic hand. Reflected in the sphere is a robot body, sitting in a chair in a small room surrounded by bookshelves and empty chairs and tables. On closer inspection, we see the left side of the sphere contains two eyes and a speaker-like mouth as well as the reflected room; the robot body is headless, holding its own spherical metal head in its hand.
@jack not many can one-up Escher but this one is in a league of its own