piss in someone's cornflakes

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Alternative forms[edit]


piss in someone's cornflakes (third-person singular simple present pisses in someone's cornflakes, present participle pissing in someone's cornflakes, simple past and past participle pissed in someone's cornflakes)

  1. (idiomatic, vulgar, informal) To disappoint or irritate someone.
    Sorry to piss in your cornflakes, but my mom's got asthma, so take your cigarettes outside.