Jimmy Fallon and Madonna sign the Facebook wall before their livestream interview at the Facebook offices on March 24, 2012 in New York City. (Photo by Dimitrios Kambouris/Getty Images)

Young man making the O.K. sign. (Photo by George Marks/Retrofile/Getty Images). Circa 1950s

US actress Jennifer Lawrence signs autographs before the premiere of the movie “Mother” presented in competition at the 74 th Venice Film Festival on September 5, 2017 at Venice Lido. (Photo by Tiziana Fabi/AFP Photo)

This little kingfisher clearly didn't read the sign when it landed itself a minnow in a no fishing zone. Taxi driver Paul Bird, 52, from Newmarket, Suffolk, UK, captured this amusing moment whilst out looking to photograph kingfishers in Norfolk, an hour drive from his home. Paul explained: “There are a total of six perches the bird was using from which to fish, one of them being the No Fishing sign”. (Photo by Paul Bird/Solent News & Photo Agency)

A signing session during the International tattoo convention at Tobacco Dock in east London, England on September 27, 2019. (Photo by Steve Parkins/Rex Features/Shutterstock)

Female North Korean soldiers parade to mark the 60th anniversary of the signing of a truce in the 1950-1953 Korean War at Kim Il-sung Square, in Pyongyang. (Photo by Jason Lee/Reuters)

French street artist OakOak produces creative works of art that use the characteristics of a location such as a light post, road sign and even a crack in the wall as inspiration but also as key elements in the work. (Photo by OakOak)

Japan's delegation gather to sign the formal surrender document on the U.S. Navy battleship USS Missouri in Tokyo Bay in a September 2, 1945 file photo. (Photo by Reuters/US Navy)