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1.
A variation of the exclamation of fuck out of anger or frustration, fucki is a term of bewilderment.
When Juan saw the large gato eating the cheese instead of the mouse, he exclaimed 'fucki!'
by Mike, Joe, & Christian October 29, 2007
 
2.
to be under the influence of alcohol and behave very inappropriately. actions include drinking copious amounts of frosty jacks and violently throwing up in alleyways.
"ready to get fuckis?"
"i am SO fuckis"
by fuckis.com August 14, 2011
 
3.
Typo meant to read "fuck is"
Where the fuckis Alice?
by Yellowlm May 13, 2008