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1.
A term signifying agreement. Nin Nin doesn't actually have a specific definition it's just used at random moments to break the silence, piss people off by chanting like the you belong to a cult of douches and just agreeing about things with other people.

Nin Nin is often believed to be a bastardized ninja.
Spermswamp's Fermented Anal Nectar has to be the fucking most original song.

Nin Nin.
by BAPHVOMIT September 06, 2009

Words related to Nin NIn

fuck yeah fuck yes gtfo mhm rape rape uh huh what word
 
2.
Gently licking breasts.
Her honey absolutely licks her ninnin gently and smoothly.
by Juperman79 December 10, 2013