laugh all the way to the bank”不是指“一路笑着去银行”，而是轻易发大财，轻松赚大钱，十分得意。

【例句】
He may not be in the biggest business, but he is doing well and can laugh all the way to the bank.
他可能不是做着最大的生意，但是他做得很好，可以轻松赚大钱。

That movie is dumb, but it's a big hit, and the studio executives will laugh all the way to the bank.
这是一部无声电影，但是获得了巨大成功。影院经理将会轻松赚大钱。