to rain cats and dogs (Jesus, bloody event that one)
to beat around/about the bush (like beating the bush straight on would make more sense?)
the real McCoy (is it some sort of ye old equivalent of I'm Slim Shady, I'm the real Slim Shady, all the other Slim Shadies are just immitating?)
apple of someone's eye (just random word salad, that one)
kicking the bucket (is what dead people do? local custom somewhere?)
pie in the sky (hmmmmkay...)
cool as cucumber (Cucumis sativus, known worldwide for its temperature lowering properties)