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That just means, they are the most dedicated to it.

A master piece takes a while, is a shitpost of the millennia.

Either that or they get lonely and bored so they make funny references on the painting and hope the patron doesn't notice.

Here is a example of romans, but granted everyone was shit posting back then not just artist.

You think he wouldn't notice such a big part? :D

Interesting about those paintings is that everything is there for a reason and has a meaning.

The groin kick is the most lethal weapon known to man during the medieval era.