When your scrotum is bigger than your penis. Balls are wrinkly and hairy. Mostly common in those people of Asian descent.
Fish Nuts Are A ball sack with just a penis head popping out of it.
by mdamone June 08, 2009
when you feel quite strongly towards a woman but they refuse to let you enter them so you head but them as hard as you can in the fanny!!!!!
this technique, the fish-nut can and should be used in the event of someone being a frigid and stubborn always wanting the light off motherbitch.
by James Rooney 4th October 18, 2008