Rihanna celebrates by flashing the crowd on July 13, 2014 in Rio de Janeiro, Brazil. (Photo by Twitter.com)

“Don't take the life too serious”. (Photo by David Olkarny)

An x-ray of a woman drinking, taken by British artist and photographer Hugh Turvey in London, England. (Photo by Hugh Turvey/SPL/Barcroft Media)

An angler fishes on the opening day of the salmon fishing season on the River Tay at Kenmore in Scotland, Britain January 16, 2017. (Photo by Russell Cheyne/Reuters)

A visitor feeds a food pellet to a giraffe in the Giraffe Centre in Nairobi, Kenya January 15, 2017. (Photo by Goran Tomasevic/Reuters)

A vendor drinks water as she waits for customers at a roadside flower market in Ahmedabad, India, February 8, 2017. (Photo by Amit Dave/Reuters)

Gold granules are displayed at the Prioksky Non-Ferrous Metals Plant in Kasimov, Russia February 14, 2017. (Photo by Sergei Karpukhin/Reuters)