Top Definition
The act of applying pressure to one half of one's testicles so that the remaining testicles inflates though the open seam of a pair of boxer shorts. This creates a look to the testicle that is similar to an inflated balloon.
"Henry gave me a big ol' eyeful of Nut Puff when I woke up after a sleepover at his house."
by Lighthouse July 06, 2013

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