A man who builds a significant lead for himself in a situation that promises to yield beneficial results only to relinquish said lead and finish on the losing end.
I was getting ready to bang yer sister, then I got a softy. I'm such a jubber dubber doodle.

I was playing golf the other day and was down 4 strokes with three holes to go and wound up coming back to beat this jubber dubber doodle.
by Big Thunder23 November 5, 2011
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