Choose a word

I can't find a solution to this. And why in his brothers bum

no matter which place you choose to put the word cat in, it gets worse

i think you need to replace EVERY word in this phrase with cat. cat cat cat cat cat cat cat cat cat... CAT CAT CAT! otherwise it's not making sense. (you never can have enought cat's :P)

Cat dicks in his little brothers bum