An image of German philosopher Karl Marx is seen in a traffic light for passengers in his hometown in Trier, Germany, April 13, 2018.

The Boeoegg, a snowman made of wadding and filled with firecrackers, stands atop a bonfire in the Sechselaeuten square in Zurich, Switzerland, April 16, 2018.

A devotee gets his face smeared with vermillion powder during "Sindoor Jatra" vermillion powder festival at Thimi, in Bhaktapur, Nepal April 15, 2018.

A participant takes part in a tyre-flipping competition over a glass bridge in Pingjiang county, Hunan province, China April 18, 2018.

A skier in a costume falls down in an attempt to cross a pool of water at the foot of a ski slope while competing in the annual "Gornoluzhnik" amateur event marking the end of the ski season, at the Bobrovy Log ski resort in the suburbs of the Siberian city of Krasnoyarsk, Russia April 15, 2018.

Sakakibara Kikai's engineer Go Sakakibara poses with the bipedal robot Mononofu during its demonstration at its factory in Shinto Village, Gunma Prefecture, Japan, April 12, 2018. Picture taken on April 12, 2018.

A tarantula burger is prepared at Bull City Burger and Brewery in celebration of Exotic Meat Month in Durham, North Carolina, U.S. April 16, 2018. Picture taken April 16, 2018.

A worker prepares the bed on the boat inside a room at the Motel "Bahia" in Concon, Chile April 14, 2018.

People play with water pistols during Songkran Water Festival to celebrate Thai New Year, in Bangkok, Thailand April 14, 2018. Reuters/Soe Zeya Tun