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1.
(n.) -- When two people share the same momentum in a foot race, bicycle race or political campaign
"Wow, Jack and Stephen are neck and neck and the race is hardly over. There is some real comentum out there on the track today, and there's no way to know who's going to win."

Overheard at a track and field event in California on January 15, 2012
by PRwiz101 January 20, 2012