break the bank
Ruin one financially, exhaust one's resources, as in I guess the price of a movie won't break the bank. This term originated in gambling, where it means that a player has won more than the banker (the house) can pay. It also may be used ironically, as above. [c. 1600]
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.