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Abbreviation for "I KNOW U COPIED IT." The language of origin comes from aydeen (aka: the ring; code 503; the cursed child.) We cnow that "KNOW" is spelled with a "K" not a "C", but thanks to the Ultimate G-Dash Wanker, it is know known as "icuci" instead of the original "ikuci." Similar abbreviations: INF, IDC, IDN, BTW, IWK, TMN, IMPH, LATSOTG, MCTLTIT, :0, WTF (fish), and STD.
Aydeen made an ICUCI of my cuakee duck icon on the GAYm pigeon app.
icuci by Spencer The Druggie (STD) February 1, 2018
Related Words
iucci Iccingdeath icuci icucicu iucbity IuCC iuchi IUCRIUCSI
An expanded version of fuck you

such that the first ic becomes f (c is at the top of i) and the second ic becomes k (c is at the bottom of i)

Usually said where using the actual version would be detrimental or result in detention.
(In front of a teacher): How dare you! icucicu!!
*Teachers puzzled*
icucicu by Jem C October 6, 2007

IUCRIUCSI 

a roganized group of people who will stand up for wha they believe...
yo man IUCRIUCSI is every were
IUCRIUCSI by willard November 14, 2004
IuCC
IuCC by _yfd June 20, 2023

Iccingdeath 

An annoying bow spammer who no lifes cosmic and gets ganked constantly.
Savage- Stop doing an Iccingdeath and fight me normally.
Iccingdeath by Iccingdeath June 10, 2020
A way to describe a pathetic person who wants to draw, name usually starts with M and ends with a vowel.
ee-uh-chee

Made by myself so I can have an answer when someone asks me something about my username.
Who such an iuchi?
Definitely Melissa or Melanie.
iuchi by iuchi August 17, 2020