Big furry fuzzy kittens ( or big furry fuzzy kittens with claws) is a phrase said when someone is more then mad. If they say big furry fuzzy kittens with claws, then they are beyond mad and are so upset they have blacked out.
Person 1- telling story or comment making other person mad.
Person 2- you keep it up, I'm going to have Big furry fuzzy kittens with claws.
"You got to give that mad dog of yours somethin'for Xmas to quieten him down. I read the local petshop's got an offer on A Basket Full of FuzzyKittens for $10.99"
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).