the meaning of "rat-hole", "You tell me"

[kjc0123]

What is the meaning of "rat-hole", "You tell me" in the following sentences?

Ray did some quick math. If the Judge gambled three times a week for five years and won two thousand dollars every time, his winnings would have been somewhere around one and a half million.
"Could he have rat-holed ninety thousand?" Ray asked. It sounded like such a small amount. 
"Anything's possible, but why hide it?" 
"You tell me."

[jno]

rat holed = hidden in a rat hole, a small place to hide a small amount of money. (Ninety thousand dollars is not a small amount to me, by the way.)

You tell me = You have asked a difficult question and I don't know the answer any more than you do; you could tell me the answer as easily as I could tell you.

[Peter Pedant]

rat-holed = hidden

squirrelled is an alternative, because squirrels hide nuts to eat during winter. But Judge is probably a dirty rotten rat-fink, so he wouldnt squirrel something away, he would rat hole it.

you arent reading a Raymond Chandler / Mickey Spillane novel are you?