Skip to main content

Home
Add a Definition
UrbanDictionary.store
Blog
Help

User Settings

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Advertise Report a Bug System Status Privacy Policy Terms of Service DMCA Accessibility Data Request Information Collection Notice reCAPTCHA Privacy reCAPTCHA Terms Do Not Sell My Personal Information © 1999-2026 Urban Dictionary ®

Definitions by (.Moth.)

Moon brain

Share definition Flag

IQ above 5000 when you say or do something stupid

You're such a fucking Moon brain

Moon brain by (.Moth.) March 24, 2021

Get merch