# shit in someone's cereal

idiom · Vulgar

Source: https://englishreference.com/idiom/shit-in-someones-cereal
Updated: 2026-08-10

## Meaning

Synonym of piss in someone's cornflakes.

## Examples

- Don't let him shit in your cereal today.
- I was having a great morning until my boss decided to shit in my cereal with a list of new tasks.
- He seems determined to shit in everyone's cereal by constantly complaining about the project's minor flaws during the presentation.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.