Ka-ching!!!
Ka-ching is a way of representing the noise made by a cash register (a machine used in shops/stores for recording sales, with a drawer for putting the money in).
Holy
(adj): Sacred, divine, blessed.
Holiday: a holy or festive day; a day off, vacation (also sacred)
Expressions: Holy Cow! Literally true in India.
Ex: Holly Mackerel! Delicious, healthy and full of mercury.