probably the shortest abbreviation of the formal word 'fucking' or often used 'fucken'
duuuuuuuuuuuuuuuude! that is so fcn epic man :OOOO
by aichi337 February 23, 2017
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F meaning Fuck, C meaning Cunt, N meaning Nigger
"the three most commonly used negative words consist of FUCK, CUNT, and WE DO NOT (pause) joke about the N word." i.e. FCN
by jim drowninmyeyes March 14, 2008
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