BYY

Basganin Yandan Yemisi. a.k.a Fateh. Used for a gay still in the closet when married and have kids.

BYY did it again.

BYY tried to touch my junk bro!

by nuttyprofessor1907 December 18, 2018

BYI

Byi stands for before you interact, typically used on social media and other online platforms.

byi read my about me blog

by offpercs May 26, 2022

BYI

Stands for Beastly Yeast Infection. Used, obviously, if someone has a very bad yeast infection or someone thinks they have a yeast infection.

Shanon: Ugh, i think i have a yeast infection
Kristin: Yea, a BYI, beastly yeast infection!

by J. Chan October 14, 2006