gravy
n[U]
1 juice that comes from meat while it is cooking; sauce made from this 肉汁; 调味肉汁.
2 (sl 俚 esp US) unearned or unexpected money (or profit) 不劳而获的或意外得到的钱财(或利益); 飞来福.
He loved to be told that one of his imaginary products was temporarily out of stock and he would faithfully promise to call again at some future date, but of course he never did.