As in "To Be Determined". The excess fat, chunkyness, fluffyness, or plumpness on a person's body. Typically located in the midsection area of the human body blocking the abs.
Matt: Dude, you really need to start exercising.
Ricky: Yeah, I guess it's time to start figuring out what I'm gonna do with all this TBD muscle.
Ricky: Yeah, I guess it's time to start figuring out what I'm gonna do with all this TBD muscle.
by Breaston December 14, 2009
by KCMOMAN April 24, 2012
an asshole
English Teacher: "This is the third time you haven't done your homework, Kyle."
Kyle: "I had chores to do on myself afterschool, teach!"
E T: "Oh, please, you're a turd muscle. That's why you didn't do your homework!"
Kyle: "I had chores to do on myself afterschool, teach!"
E T: "Oh, please, you're a turd muscle. That's why you didn't do your homework!"
by NateBlake666 June 6, 2014
by Yet squad boy February 12, 2016
The one and only "Legendary Luv Muscle" "Big Jim Reaper" "Kentucky King of Kickass" "the Deity of Doin It" "the Hardcore Hillbilly Heartthrob",the real reason Luv Muscle means anything in today's society,this man is the reason for the big dick myths and legends associated with Russell or Luv Muscle,the sexiest critter to ever crawl out the Appalachian mountains,lover, fighter, friend,father,an forever a Legendary HOTTIE!!!!!
by BigJimReaper February 24, 2023
girl 1- "I got a new boyfriend!"
girl 2- "What's he like?"
girl 1- "uh..."
girl 2- "he's a muscle boy"
girl 2- "What's he like?"
girl 1- "uh..."
girl 2- "he's a muscle boy"
by Griffin Stein November 21, 2022
Boy oh boy, Billy is acting like a dink muscle today. Look at him barge through the line to load up on seconds.
by GMA-4-Me December 28, 2018