Lego Makes Me Cry

Kidz, there's a classic set of illusions, including the Penrose triangle (created by Oscar Reutersvard), that look normal at any one junction of the picture but as a whole are impossible. M.C. Escher famously did a number of these in lithograph style and tremendous detail including Relativity in the 1950s.

A sharp eyed iPhone developer that I know sent the following lego instructions for making your own Penrose triangle. Don't blame the Spankster if you wind up crying in your milk after a few hours...