Nelson Shanks is an artist who got the incredible opportunity to paint Bill Clinton's official presidential portrait, for the National Portrait Gallery. That's quite an honor. So naturally he decided to stick it to him.

He says he secretly hid a reference to Monica Lewinsky in the painting. There's a strange shadow on the wall next to Clinton in the shape of a dress.

Nelson says when he was painting the room, he even put a blue dress like Lewinsky's on a mannequin, and painted its shadow. We're assuming Bill wasn't in the room by that point.

"The reality is, [Clinton's] probably the most famous liar of all time. He and his administration did some very good things, of course, but I could never get this Monica thing completely out of my mind and subtly incorporated it."

He also says the Clintons know about the Monica reference, and have tried to get the painting removed from the gallery. The museum says that's a lie but they're not currently showing it, since there are so many other Clinton paintings.

Business Insider