Obama Holds Final Primary Night Event In St. Paul(01 of22)
Open Image ModalDemocratic presidential candidate Sen. Barack Obama (D-IL) (R) and his wife Michelle Obama bump fists at an election night rally at the Xcel Energy Center June 3, 2008 in St. Paul, Minnesota. (credit:Scott Olson/Getty Images)
Barack Obama Campaigns Across U.S. Ahead Of Primaries(02 of22)
Open Image ModalSPRINGHILL, West Virginia: Democratic presidential hopeful Sen. Barack Obama (D-IL) (L) bumps fists with Iraq war veteran Paul Scott after playing a game of pool during a stop at Schultzie's Bar & Hot Spot May 12, 2008 in Springhill, W.Va. (credit:Mark Wilson/Getty Images)
Obama And McCain Address LULAC National Convention(03 of22)
Open Image ModalWASHINGTON -- Los Angeles Mayor Antonio Villaraigosa (L) gives a fist bump to presumptive Democratic presidential nominee Sen. Barack Obama (D-IL) during the national convention of the League of United Latin American Citizens (LULAC) at the Washington Hilton July 8, 2008, in Washington, D.C. (credit:Chip Somodevilla/Getty Images)
In Chicago's Hyde Park Neighborhood(04 of22)
Open Image ModalPresident Barack Obama acknowledges the crowd as he exchanges fist bumps with the audience after speaking at Hyde Park Academy, Thursday, Feb. 14, 2013, in Chicago. (credit:M. Spencer Green/Associated Press)
Obama Fist Bumps In The White House(05 of22)
Open Image ModalPresident Barack Obama fist-bumps custodian Lawrence Lipscomb in the Eisenhower Executive Office Building in the White House. (credit:Official White House Photo by Pete Souza)
On The South Lawn(06 of22)
Open Image ModalPresident Barack Obama does a fist bump with Ethan Gibbs, the son of Press Secretary Robert Gibbs, after arriving by Marine One on the South Lawn of the White House, Washington, D.C., April 19, 2009. (credit:Aude Guerrucci/Getty Images)
Campaigning Weeks Away From Election Day(07 of22)
Open Image ModalDemocratic presidential nominee, Sen. Barack Obama (Ill.) bumps fists with Ethan Gibbs as he arrives at Dulles International Airport Oct. 22, 2008, in Chantilly, Virginia. (credit:Joe Raedle/Getty Images)
At A Surprise Appearance(08 of22)
Open Image ModalU.S. Democratic presidential candidate Sen. Barack Obama (D-Ill.) and North Carolina Gov. Mike Easley bump fists at Sen. Obama's surprise appearance at a North Carolina Democratic Party dinner Oct. 4, 2008 at The Grove Park Inn in Asheville, North Carolina. (credit:Stan Honda/Getty Images)
While Visiting Troops In Iraq(09 of22)
Open Image ModalIn this handout provided by the White House, U.S. President Barack Obama (L) receives a fist bump from a U.S. soldier as he greets hundreds of U.S. troops during his visit to Camp Victory on April 7, 2009, in Baghdad, Iraq. (credit:Pete Souza/The White House)
In The Oval Office(10 of22)
Open Image ModalIn this handout provided by the White House, U.S. President Barack Obama, holding a football, offers a fist bump to senior staff member Pete Rouse during a meeting with senior advisors in the Oval Office of the White House on April 8, 2009, in Washington, D.C. (credit:Pete Souza/The White House)
Obama Tours Ohio(11 of22)
Open Image ModalU.S. President Barack Obama gives a student a fist bump while touring the Wind Turbine Manufacturing and Fabrication Lab at Lorain County Community College in Elyria, Ohio, Jan. 22, 2010. Obama is visiting Ohio to tour local businesses and hold a town hall meeting on jobs and the economy. (credit:Saul Loeb/Getty Images)
After A Book Reading(12 of22)
Open Image ModalU.S. President Barack Obama bumps fists with school children after reading Christmas book The Polar Express at the Richard England Clubhouse and Community Center in Washington, D.C., on Dec. 21, 2009. (credit:Jewel Samad/Getty Images)
On The Golf Course(13 of22)
Open Image ModalU.S. President Barack Obama (right) fist bumps with Marvin Nicholson as he plays golf at Farm Neck Golf Club on Martha's Vineyard, Massachusetts, on Aug. 26, 2010. (credit:Jewel Samad/Getty Images)
During The Annual Easter Egg Roll(14 of22)
Open Image ModalObama gives a fist bump to a young boy during a "Let's Move" tennis clinic during the White House Easter Egg Roll on the South Lawn of the White House April 25, 2011, in Washington, D.C. (credit:Chip Somodevilla/Getty Images)
When Discussing Economic Matters(15 of22)
Open Image ModalObama gives a young boy a fist bump as he greets guests after speaking about the economy at Shaker Heights High School in Shaker Heights, Ohio, a suburb of Cleveland, on Jan. 4, 2012. (credit:Saul Loeb/Getty Images)
In Afghanistan(16 of22)
Open Image ModalObama fist bumps service members after addressing troops at Bagram Air Field, Afghanistan, Wednesday, May 2, 2012. (credit:Charles Dharapak/Associated Press)
While Working The Next Generation Of Voters(17 of22)
Open Image ModalObama asks for a fist bump from a young girl as he speaks with patrons outside the Kozy Corner restaurant in Oak Harbor, Ohio, July 5, 2012, where he made an unannounced visit while on a bus tour of Ohio and Pennsylvania. (credit:Getty Images)
Obama Welcomes 2012 NCAA Women's Basketball Champions(18 of22)
Open Image ModalU.S. President Barack Obama gives a fist bump to Baylor University basketball guard Terran Condrey while welcoming the 2012 NCAA Women’s Basketball champions in the East Room of the White House July 18, 2012, in Washington, D.C. The Baylor Lady Bears became the first NCAA basketball team to complete a 40-0 season by defeating Notre Dame 80-61 in the NCAA women's championship. (credit:Chip Somodevilla/Getty Images)
During His Second Campaign(19 of22)
Open Image ModalObama bumps fists with supporters after delivering remarks during a campaign event at Truckee Meadows Community College in Reno, Nevada, Aug. 21, 2012. (credit:Jim Watson/Getty Images)
At Kent State University(20 of22)
Open Image ModalPresident Barack Obama pounds fists with a supporter after speaking at a campaign event at The Memorial Athletic and Convocation Center at Kent State University Wednesday, Sept. 26, 2012, in Kent, Ohio. (credit:Tony Dejak/Associated Press)
During Lunch(21 of22)
Open Image ModalObama fist bumps with a woman during a lunch visit to the West Tampa Sandwich Shop and Restaurant in Tampa, Florida, September 8, 2012, during the first day of a two-day bus tour across Florida. (credit:Saul Loeb/Getty Images)
In New Hampshire(22 of22)
Open Image ModalObama bumps fists with a supporter after speaking at a campaign rally in Nashua, New Hampshire, on Oct. 27, 2012. (credit:Jim Watson/Getty Images)