When someone is giving their absolute all—mentally, emotionally, and physically—to achieve a goal or overcome a challenge. It means full commitment, no holding back. Not just about physical strength, but full dedication and drive.
Ever since she decided to become a doctor, she's been going full muscle—no parties, no breaks, just pure grind.
by KingZoro01 May 4, 2025

by Iceyhott August 27, 2017

DUDE!, i saw Matt talking to these hot chicks yesterday and he told me that he was busy, what a butt muscle!
by D-Peezy February 27, 2009

by hahainyourface69 May 12, 2021

by Dick Gosinyah July 17, 2022

by CoolotakuB) April 23, 2023
