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1.
A person who is not only stupid, but bitchy and stupid.
I heard this ribitchulous blonde tell a guy in a wheelchair that he was lazy.
by HigherthanaMile April 03, 2011
 
2.
Ribitchulous - adj. : A ridiculous bitch. A female who's bitchiness is so ridiculous it caused a new word to be created just to describe the insanity.
"Dude, last night my woman got pissed that I farted and while I was asleep she duct-taped me to the bed and shaved my junk with an epilator." "What?! Dayum, that ho is ribitchulous!"
by Britterz&Carmack December 04, 2013