# piss like a racehorse

idiom · Vulgar

Source: https://englishreference.com/idiom/piss-like-a-racehorse
Updated: 2026-08-10

## Meaning

To urinate profusely, especially in reference to a profound need to do so.

## Examples

- I need to stop; I have to piss like a racehorse.
- She drinks too much coffee and always has to piss like a racehorse.
- You will piss like a racehorse if you drink that giant bottle of water.
- After drinking two liters of water during the long drive, I really need to piss like a racehorse.
- He drank three large beers during the movie and now he has to piss like a racehorse before the bus arrives.
- The hikers finally reached the campsite and immediately looked for a private spot because they all had to piss like a racehorse.
- Following the lengthy lecture, the students rushed to the restrooms, all needing to piss like a racehorse.

## Origin

The expression is an emphatic variation of the earlier piss like a horse, a comparison necessitated by the biological reality that a horse produces a significant volume of urine roughly every four hours. The addition of the racehorse provides a specific, if no more productive, equine image to the long-standing observation of the animal's urinary capacity.

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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.