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1.
JFUDI- stands for Just Fucking Urban Dictionary It. It is used when somebody asks you what a particular slang meant and you did not feel like explaining.
(via text)
Jason: Dude, whats buttered muffin?

Me:jfudi
by getdhood February 04, 2010
 
2.
JFUDI

Just-Fucking-Urban-Dictionary-It

Or

'Just Fucking Urban Dictionary It!'
Bint - "What does JFUDI mean?"

Man - "Just Fucking Urban Dictionary It!"
by Call Me Sick Boy April 21, 2009