x-lockers

[Orion Montoya]

> BTW, wasn't the blivit also a kind of trompe-l'oeil? It was a drawing of a kind of
> vaguely trident-like figure.
> I don't remember where or when I first saw this drawing, but it was some
> time in the '60's that I learned that it was supposedly also called a
> "blivit." I read it somewhere.

I know this as a poiuyt, from Mad magazine (March 1965), but on
http://psylux.psych.tu-dresden.de/i1/kaw/diverses%20Material/www.illusionworks.com/html/impossible_trident.html
I see it's also known as a blivit and some other things.