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Altering the handlebars on a bike by flipping drop bars (typical road bike handlebars) over and cutting them down into bull horn handlebars.
Old Schwinn fixie conversion with flop 'n' chop (bullhorn) handlebars.
by UltramaticOrange November 09, 2009
A vasectomy.
"What appointment are you here for today?" asked the urologist.
"Flop 'n' chop!" I said, while enjoying the buzz of my Valium pill.
by Mindraker May 01, 2009