Here is a doodle by Vann3, which reminds me of an M.C. Escher drawing, where there are multiple vanishing points. When I asked the artist about the meaning of the title ("racketship"), he indicated that the title did not have any correlation to the drawing. However, even before Vann3 had replied to my query, the bottom half of the drawing reminded me both of a top view of a waterfall and the thrust of a three-engined rocket ship blasting off. Whatever the case, I enjoy the dynamic and disconcerting perspective all in one drawing.
By the way, here is a great website for M.C. Escher: