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2.
To leave a party/club/pub early without for no reason without notifying your friends. Often this occurs when you have consumed more alcohol than you can handle
I pulled a jeff last night. I left the club at 11 o'clock
by Shaun Jeffree April 03, 2007
 
1.
The tragic art of succeeding until it matters most - every time.
The Texas Rangers beat the Yankees then Pulled a Jeff against the Giants

NFL Players Adrian Peterson, Peyton Hillis and Steve Johnson had great seasons but Pulled a Jeff in the playoffs

The Ravens Pulled a Jeff against the Steelers
by Snooflak December 15, 2010