Butt-Yubi Share definition Flag Like a butt dial but in a chatroom with a lot of people, where someone types a lot of random characters with a device designed to do two-factor auth. User1: jhfjccgnctdujnkbehbicfcgbibgbdidfshejrknnunf User2: Motherfucker just butt-yubied us again. Butt-Yubi by ff9900.canary November 5, 2018 Get the Butt-Yubi mug.