BM

1. Used in online parenting forums to mean "breast milk".

2. Used in online wedding forums to either mean "best man" or bride's maid", depending on who's talking.

1. What is the best way to prepare frozen BM?

2. The attendents all wore silver BM dresses.

by EFMama April 19, 2009

BM

Black Market

Snap! The thing is a whole 10 bucks on da black market, Jamal!

by JOSHY May 18, 2003

BM Blowout

A disgusting assplosion of fecal matter (all forms) occuring whilst still wearing pants. 97% of the time the "Blowout" comes without warning; the proverbial brown-tsunami has been known to hit no matter the situation.
Only three people have died from Blowouts in the past 37 years.

intercom at retirement home: "Would Oscar please report to ward 6 with a bucket of bleach and a tire iron, Beatrice had another BM Blowout."

by the_guy January 16, 2005

BM

abreviation for black man

While listening to the don and mike show a BM called in and it was robert the mailman.

by johnnyb December 23, 2004

AM BM

Morning (AM) bowel movement (BM). The first poop of the day, almost always taken immediately upon awakening in the morning.

A "beer dump" is a type of AM BM, but not all AM BMs are beer dumps.

"I can't even start my day with some coffee until I've had my AM BM."

"I didn't have time for my AM BM this morning so I've had to hold that sh*t in all f*cking morning."

by synthbeatz May 18, 2010

BMS Prairie

Barrington Middle School Prairie Campus. Where there’s only two successful couples that make out and the rest are just having sex. Most people are rich but some are poor and the rich ones flex on the poor one. There’s always that one extremely rich girl that thinks everyone’s as rich as her and talks about Gucci and Luis Vuitton. Most sixth graders say they’re going to fight but then back out, and the seventh graders all lost their virginity. Mr. Gillete thinks he rules the school and Mr. Lobbins doesn’t do shit. Welcome to Barrington Prairie Middle School kids🤠

Poor-ish girl: omg my dads buying me something. Idk what to ask for!
Extremely rich girl: omg ask for new AirForce1’s or an iPhone XR!!
Poor-ish girl: um...
Welcome to bms prairie:)

by Personthatgoestoprairie May 19, 2019

BM Stick

Short for bowel movement, it describes excrement that is stick (or log) shaped. A derogatory name, term or insult.

"You big BM stick!" shouted Jane at Harry, with a slight sneer.

by HangDog September 12, 2009