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“laughing all the way to the bank”
laugh all the way to the bank (informal saying or idiom), laughs all the way to the bank; laughed all the way to the bank; laughing all the way to the bank
Having made a lot of money; especially, when doing something that other people consider to be foolish: There were those who thought Celeste's investment in the company was stupid, but now she's laughing all the way to the bank.