brain worms
CommonA mental state of holding weird, obsessive, or internet-poisoned beliefs from spending too much time online.
Can be self-directed or aimed at others. Self-directed is usually playful ('I have brain worms'). Aimed at others it's a sharper dismissal.
Real-world examples4 examples
| # | Example | What it means | Source |
|---|---|---|---|
| 01 | he spent 6 months on 4chan and now nothing he says makes sense. full brain worms | Describing someone whose thinking has been visibly corrupted by a particular online community. | reddit, 2022 |
| 02 | i've been in the finance bro rabbit hole for 3 days. the brain worms are setting in | Self-aware observation that algorithm-fed content is starting to shape thinking. | x, 2023 |
| 03 | that take is so unhinged it can only be brain worms from the timeline | Blaming someone's bad opinion on overexposure to algorithm-driven content. | x, 2023 |
| 04 | touch grass. the brain worms are talking. | Telling someone to go offline because their thinking has become distorted. | x, 2022 |
Use it when
- Someone holds a belief that is obviously internet-poisoned.
- You went down an algorithm rabbit hole and can feel it affecting your thinking.
- Calling out logic that only makes sense within a specific online bubble.
Do not use it when
- Someone holds an unconventional opinion that is actually well-reasoned.
Variations and related forms
Brain worms vs brainrot
brain worms
Brain worms implies an external agent corrupting your thinking, like something that infected you.
VS
brainrot
Brainrot is more about your brain decaying from consuming low-quality content.
Origin and context
Borrowed from the literal biological term for parasitic brain infections. Became internet slang for algorithm-corrupted thinking in the early 2020s, popularized on Twitter and Reddit as a way to describe what happens when someone goes too deep into an online rabbit hole.
- First seen
- 2020
- Confidence
- medium
Cite this page
Use this stable URL to reference the entry.
https://slang.fyi/brain-wormsUpdated: 2026-08-28License: CC BY 4.0