I gave up after five minutes and looked for the answer. Then you can't not see it. I probably should have tried harder. :)
I thought it was the face and the tongue sticking out about 5/8 of the way down the right side... i.e., there
is no optical illusion, so I quit looking.
Sorta like my pictures of me in my full camouflage outfit. "I'm standing right next to the first big tree on the left."
Terry, 230RN