Top definition
To be ahead/doing well in something, only to fuck it up at the last second and fail.

Origin: Geoff Ramsey of Achievement Hunter, who constantly causes himself to fail, no matter how hard he tries to succeed.
*While playing GTA V*
"I'm gonna win!"
*falls off the map, proceeds to be passed by everyone in race*
"Gah! I Geoff'd it!"
via giphy
by Caninse February 20, 2017
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