Top Definition
1) To festoon one's testicles with colored lights, evergreen garlands, and tiny Christmas ornaments

2) To punch Santa Claus in the nuts for shortchanging you last Christmas
1) I wanted to make my girlfriend feel merry in the bedroom this Christmas so I decided to deck the balls.

2) In spite of being a good boy, Santa gave me nothing but a pack of underwear last Christmas, so this year I'm gonna wait in ambush in front of the fireplace so that I can deck the balls.
by chadsuperhero December 09, 2013
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