Top Definition
A term that stands for Crazy 4 Ink (tatoos)
it started when Jerkaholic ( ) brought out a crew neck sweater with 'Crazy 4 Ink, written on it it is also commonly used by the rapper Young Sam.
person 1: i'm gettin tatto's everywhere.

person 2: loool, C4I
by lilkilik April 23, 2011

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