# go batshit

idiom

Source: https://englishreference.com/idiom/go-batshit
Updated: 2026-08-10

## Meaning

To become completely irrational; to react in an irrationally extreme manner.

## Examples

- He went batshit when he saw the bill.
- My roommate went batshit after someone ate her leftovers from the fridge.
- Calm and collected for years, the normally restrained professor went batshit upon learning his research had been plagiarised.

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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.