what's the probably-german word for not ordering fries with your takeout and only regretting it once you've gotten home

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what's the probably-german word for not ordering fries with your takeout and only regretting it once you've gotten home
Wait pommeslassbedaurn since it's specifically fries
Ich habe pommeslassbedaurn weil ich keine pommes bestellen hatte
Pardon my pidgin deutsch