BM

Acronym for Bad Manner(ed), popular in the Starcraft (II) community.

John and Zoe take their time to wait for Jack to join their game, and Jack leaves immediately upon it started

Zoe: Jacks so BM.

BM

Bowel Movement

When listening to the Don and Mike show, I had to take a huge BM

BMS

if you like a photo on Instagram or Facebook that says "like for a rate" and they give you a BMS rate it means (break my scale) as in you broke their scale of 1-10

Alicia - omg Caitlyn you are so BMS
Caitlyn- aww thanks ßæ 😘😍

BMS

Broke My Scale

To rate someone

Danggg that girl Is BMS

Hey Rate:BMS

BMS

Blowing My Shit; or to annoy someone really hard

My teacher is BMS for taking away my phone in class.

BM

Abbreviation for "Bowel Movement"

Family Guy S3E14: Chris: What's a library Dad? Peter: Oh it's just a place where homeless come to shave and go B.M.

BM

Breakup Message

Yo Gotti: I've seen your girl post a BM so I hit her in the DM