An expression used to amplify the meaning of the word "fuck", which, actually, is already used to amplify something. However, the latter doesn't really mean anything, so the amplification of something that doesn't mean anything is something that doesn't fucking mean anything.

Moreover, note that the expression itself does not mean anything either since the name of fuck is "fuck".
by KoKoFRA May 3, 2008
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A day where people who’s names start with N and L must have sex on May 15th
Luci: I’m so excited to fuck Nicole today for national N and L names fuck day
Albert: Wow I sure wish I could celebrate a day like this
by nives24645 May 15, 2021
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Chris Rock: Jada, I love ya, G.I. Jane 2, can’t wait to see it.
Will Smith: Walks to Chris
Chris: Uh-oh, King Richard-
(Gets slapped)
Chris: Oh wow! Will Smith just smacked the shit outta me!
Will: Keep my wife’s name out your fucking mouth!
Chris: It was a G.I. Jane joke-
Will: Keep my wife’s name out your fucking mouth!!
by NougatNewt March 29, 2022
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