(noun) A belief that "crazies are great in bed." Coined as a parallel to "yellow fever" for fetishizing Asian women, "jungle fever" for fetishizing Black women, etc.
It's not always easy to distinguish someone with brain fever from a partner who's merely willing to support you through your mental illness.
by Cardemius Brouch Jr. January 4, 2025
Get the brain fevermug. when one tucks their scrotum between their thighs, thus to appear as a male has a a vagina from the front, but a disturbing genital disease from the rear
did you see silence of the lambs last night? that was so gross when buffalo bill pulled of the reverse brains...
i got my roomate with the reverse brains when he walked in last night, he was so schocked
i got my roomate with the reverse brains when he walked in last night, he was so schocked
by gastly gonads March 3, 2010
Get the reverse brainsmug. guy on twitter: only weird al can do parodies all other parodies suck
guy on twitter quote retweeting it: man the Al Brain strong with this one
guy on twitter quote retweeting it: man the Al Brain strong with this one
by Sethsterwastaken June 19, 2023
Get the Al Brainmug. Something that the majority of the human population lacks, despite having evolved to increase its size.
by HackerDragon9999 May 16, 2025
Get the brainmug. 
Guy 1: "Hey man, Sorry I couldn't come to the party, I scrolled through tik tok and forgot."
Guy 2: "What the funk man! Don't watch that, that's brain-rot!
Guy 2: "What the funk man! Don't watch that, that's brain-rot!
by Axatufan June 5, 2024
Get the Brain-Rotmug. by DaSauceGod October 21, 2018
Get the Brainmug.