v. Ejaculating in a satisfying or otherwise noteworthy manner, especially if an unusually high volume of semen was produced. If the nut was busted under embarrassing and/or hilarious circumstances, chances are it was a mighty fat nut.

I was jerking off in my room, and right as I was about to finish my mom called me down for dinner, and I yelled "coming!", then started laughing really hard at the double-entendre, but the laughter made me double over and I ended up busting a mighty fat nut all over my brand-new polo shirt.

Busting a Mighty Fat Nut by The Splartmeister January 7, 2017

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i just busted a fat nut earlier today

when you busted a fat nut earlier today.

Yo, I just busted a fat nut earlier today!

i just busted a fat nut earlier today by xray489 March 21, 2021

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Bust a fat nut

When you masturbstate for straight 6 rounds after an extended period of abstinence due to circumstantial inconveniences.

End of the summer camp:
Jim: ‘Ye when I’m back home imma bust a fat nut’
Jack: ‘nice’

Bust a fat nut by 'Filthy Mortal Child' July 13, 2019

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mighty fat nut

A gigantic ejaculation

I just busted a mighty fat nut in the neighbor's dog.

mighty fat nut by AnimeTiddies6969 December 5, 2016

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