Serena Williams of the U.S. celebrates after defeating Victoria Azarenka of Belarus in their women's semi-final tennis match at the Wimbledon tennis championships in London July 5, 2012.
Mexico's Vanessa Zambotti (in white) reacts after defeating Brazil's Claudirene Cezar in their women's plus 78kg final match at the Rio de Janeiro International Grand Slam judo tournament June 10, 2012.
AFP PHOTO / FILIPPO
Dutch forward Robin van Persie (L) vies with Danish defender and captain Daniel Agger during the Euro 2012 football championships group match between the Netherlands and Denmark on June 9, 2012 at the Metalist Stadium in Kharkiv.
Toronto Blue Jays center fielder Colby Rasmus misses a hit by Baltimore Orioles batter Mark Reynolds during the ninth inning of their MLB American League baseball game in Toronto May 28, 2012.
AFP PHOTO/ Samsung Olympic Games Pledge
British climber Kenton Cool crosses a precipice at the ice fall about halfway up the south side of Mount Everest as he was acclimatising for his summit attempt on May 24, 2012. Cool reached the summit of Everest on May 25, his website announced, fulfilling an 88-year-old promise to carry an Olympic gold medal to the top of the world's highest peak. He was carrying one of 21 golds awarded to members of the 1922 British Everest expedition at the 1924 Winter Olympics, in an era when mountaineering was included as an Olympic sport.
Princess Anne, Princess Royal meets with Greek President Karolos Papoulias at the Presidental Palace during the Olympic flame hand over meeting on May 17, 2012 in Athens, Greece. Princess Anne is part of the UK delegation that will receive the London 2012 Olympic flame in the historic Panathenaic Stadium in the Greek capital. (Louisa Gouliamaki/Pool/Getty Images)
Nothing says Saturday football quite like a riot at a league championship final, does it?
A Fenerbahce soccer fan gestures as others throw items onto the field after the team's Turkish Super League, Super Final match against Galatasaray at Sukru Saracoglu stadium in Istanbul May 12, 2012. One fan was reportedly stabbed after the goalless match, while others broke off plastic chairs and threw them at police, who tried to use their shields to protect players. Flares were also tossed at police, who responded with pepper spray to disperse the angry fans. (Reuters/Osman Orsal)
This fun gallery is inspired by a workplace prank played between myself and fellow photo editor (who is now my boss) Taras Slawnych. We would often taunt each other by leaving a "yawning" image on our screen when we would leave the remaining night editor on duty to wrap up the shift into the wee hours. Here are a few classics from our files.
Feel free to share this gallery to taunt your friends and co-workers!
A Siberian tiger yawns at the St-Felicien Wildlife zoo.
AFP PHOTO/Diptendu DUTTA
Tibetan spiritual leader The Dalai Lama yawns while at the Central school for Tibetans in Kalimpong.
AP Photo/Tsvangirayi Mukwazhi
US pop star Madonna, left, and her daughter Lourdes attend the ground breaking ceremony for her Raising Malawi Academy for Girls in Malawi.
Victor Fraile/Getty Images
Michelle Wie of USA yawns on the 18th hole during day one of the LPGA Thailand.
AP Photo/PA, Ben Birchall
Warbie, a seven-week-old ring-tailed lemur is pictured yawning at Bristol Zoo.
Toronto Argonauts quarterback Cleo Lemon yawns during his team's practice for the CFL Eastern Division football final at Olympic Stadium in Montreal.
A boy in a police uniform yawns during a promotion ceremony at a police school in Bogota.
DAVID COOPER / TORONTO STAR
Stephen Ames had a late night and an early morning finnishing his first round. Ames is seen hear yawning on the tenth tee as he starts Round 2 Friday at the RBC Canadian Open at the Glen Abbey Golf Club in Oakville.
Mark Wilson/Getty Images
U.S. Rep. Pete King (R-NY) sits with his grandson during a roll call vote on the election of the next Speaker of the House.
PETER PARKS/AFP/Getty Images
A Chinese paramilitary policeman yawns during heavy snowfall at Tiananmen Gate in Beijing.
A girl yawns as she waits with other children to greet Poland's President Komorowski during his meeting with the Polish community in Maisiagala.
AP Photo/Gurinder Osan
India's Yuvraj Singh yawns as he arrives for a practice session ahead of their Cricket World Cup Group B match with Kenya in Chennai, India.
A policewoman yawns as she watches protesters take part in a march in Mbabane.
YOSHIKAZU TSUNO/AFP/Getty Images
A money dealer yawns under a foreign exchange rate board at a Tokyo foreign exchange market.
REUTERS/ Eddie Keogh
A German Shorthaired Pointer yawns while waiting for judging on the first day of the Crufts Dog Show in Birmingham.
Tony Saxon/Guelph Mercury
Guelph Storm forward Zack Mitchell yawns during practice.
LIU JIN/AFP/Getty Images
Bo Xilai, Communist Party secretary of Chongqing yawns during the closing session of the National Committee of the Chinese People's Political Consultative Conference (CPPCC) at the Great Hall of the People in Beijing
AP Photo/Lenny Ignelzi
Los Angeles Dodgers' Clayton Kershaw yawns while trying to stay awake as the Dodgers' baseball game against the San Diego Padres.
AP Photo/Geert Vanden Wijngaert
Portugal's caretaker Prime Minister Jose Socrates, right, yawns as he leaves an EU summit in Brussels.
Scott Halleran/Getty Images
Briny Baird yawns as he waits on the 17th hole during the second round of the Greenbrier Classic on The Old White Course at the Greenbrier Resort.