Ten epic yawns (10 images)

President Jimmy and First Lady Rosalynn Carter entertained some friends from Georgia on the South Lawn of the White House on August 7, 1980. Their yawning grandson, James Earl Carter IV, sits on the president's lap. Photo by Don Rypka/UPI

San Francisco Giants' Barry Bonds yawns as he waits in the dugout prior to the game against the Chicago Cubs at AT&T Park in San Francisco on May 10, 2006. Bonds needs one home run to tie Babe Ruth's lifetime total of 714. (UPI Photo/Bruce Gordon)

A one-month old California sea lion pup yawns while sunning himself on a rocky ledge at the sea lion pool at the Bronx Zoo on August 11,2005 in New York City. The pup, who is thus far unnamed, is among several babies being introduced at the zoo. (UPI Photo/Monika Graff)

British Premier Tony Blair yawns during a break at the G8 Summit in Heiligendamm, Germany on June 7, 2007. The leaders of the G8 nations are holding their annual summit in the historic Heiligendamm sea resort on June 6-8, 2007. (UPI Photo/Anatoli Zhdanov)