brainworms

In the context of 4chan's /lgbt/ board, inconsequential or false information related to gender transition that tends to become a fixation among board users to the point where many end up unironically believing it. Examples include Ray Blanchard's transsexual typology (AGP vs. HSTS) and differences in bone structure between sexes that is typically not noticeable.

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slang term for a hangover

An image, sound, or other thought (usually one that you don't want to think about) that gets stuck in your mind. The best way to get rid of a brainworm is to replace it with something else (just don't think about your current stuck thought, though).

A brainworm is different from an earworm in that an earworm is a song that gets stuck in your head, while a brainworm is anything that gets stuck in your head.

An belief (or set of beliefs) that become popular "en masse" and cause people to act erratically.

Unproductive, unreasonable, and/or outright harmful ideas that become “stuck” in one’s head and/or internalized. A “brainwormed individual” is someone who has been driven insane by the outlandish and malicious content commonly found in spaces like 4tran and 4chan at large.

Getting a song (usually one you dislike) stuck inside your mind that repeats endlessly.