There's nothing like getting your insult across by way of a passive aggressive note – especially when you work in an office.

On a trip to Amsterdam, London-based designer Olly Gibbs visited the Rijksmuseum and took photos of the sad looking individuals in the portraits using his FaceApp-enabled smartphone that can put a smile on just about any frowning face. The miserable faces became instantly entertaining adding some charm to the classical art collection.

This illustrator, John Holcroft, is genius! check out his website for more.