BYOM (Bring Your Own Meat)

BYOM (Bring Your Own Meat) is a practice at some barbecues. The BBQ establishment lends the use of its smokers, but participants must bring their own meat (steaks, hamburgers, chicken, ribs, et al.).
 
“BYOM” has been cited in Texas since at least 1993. The terms BYOB (“Bring Your Own Bottle” or “Bring Your Own Beer”) and BYOL (“Bring Your Own Liquor”) date back to 1924 in the Prohibition era.
   
   
Urban Dictionary
BYOM
Bring Your Own Meat
Based on the common practice of referring to parties where you provide your own alcohol as BYOB (Bring Your Own Beer). Instead of beer, meat is used instead. Meat is often the most expensive item at a dinner or cookout, and having guests bring their own can cut costs for the host.
The cookout at Bill’s this weekend is going to be BYOM.
by Kevin Garner Raleigh, NC May 2, 2005
 
101 Things To Do (Greater Houston)
Not sure what to cook? Alspaugh recommends asking guests to BYOM “Bring Your Own Meat.”
 
“You never know what they are going to bring—it could be chicken wings or ribeyes,” he said. 
 
28 May 1993, Fort Worth (TX) Star-Telegram, pg. 9:
Meathead: Bar of Soap, 3615 Perry Ave., is having weekly BYOM (bring your own meat) eat-outs Sunday nights at 7.
   
Texas Barbecue
by Paris Permenter & John Bigley
Kansas City, MO: Pig Out Publications
1994
Pg. 41: 
The Club House even has a B-Y-O-M (bring your own meat) feature. You can bring in your own meat, and they’ll smoke it for you.
 
Google Groups: alt.tv.dallas
Newsgroups: alt.tv.dallas
From: .(JavaScript must be enabled to view this email address) (Ryan P Dziadosz)
Date: 1997/06/06
Subject: my own Ewing BBQ
 
The conditions were set, it was BYOB, BYOM (bring your own meat), and no one is allowed in unless they’re wearing western gear.
   
Texas House Concerts
Texas House Concerts in the Houston Press 
John Nova Lomax
Published: Thursday, January 27, 2005
The shows are BYOB and BYOM, which Space notes stands for “bring your own meat, not marijuana.” Said meat is grilled for you—you can bring whatever you want, from hot dogs and hamburgers to pork loins and steaks—on any one of Space’s grand total of three pits. “It’s like one of those ‘You might be a redneck’ jokes,” Space notes. “You might be a redneck if you have three barbecue pits in your backyard.”
 
Survivalist Boards
East Texas Bar-b-q
kev
08-20-2007, 08:03 AM
(...)
This is a BYOB, BYOIC & BYOM event:
Bring your own Beer
Bring your own Babe
Bring your own Meat
Bring your own Ice Chest
Bring some kind of lawn chair
 
Houston (TX) Chronicle—HandStamp blog
March 07, 2008
(...)
Robert Frith brings his no-frills country sounds to a bar that offers a “bring your own meat” night later this month. Mmm-kay.