What cat? What bag?

[Aerith's Knight]

Would your "The cat falls through the bag" be anywhere near our "the cat's out of the bag" saying? For us it means that a secret has been revealed.

It's similar, but it doesn't only apply to a secret, more a general finding things out you didn't know. Funny, that means the English adopted one of our sayings. (or the other way around, of course)

Another few:

All craziness on a stick.

Keeping an eye in the sail.

Not having a high hat of someone.