Crazy As A Pair Of Waltzing Mice

...Because mice are terrible at three-quarters time.

...Because mice waltzing are more sentimental than lunatic.

...Because all the mice skirts and mice trousers get in the way of quickly finding cheese.

Or to piggyback on Raymond Chandler's conclusion "but I like him," MacArthur Park turns out to be a pretty good place to trot around while a lake-soaked dog reminisces about the ducks he just about caught.