Definitions by M4ngm

btmn

Means “Breathing Through My Nose” to refer to those moments where someone sends a picture/video/meme/post that is mildly funny so you don’t lol or lmao, but simply just exale quickly through your nose.

Friend: *sends mildly funny meme*
Me: *not very amused* BTMN

btmn by M4ngm November 3, 2018