1 definition by lxx47

a largely fake concept developed by planet fitness to describe when out of shape soccer moms are afraid to go to the gym because they think everyone is looking at their muffin top and judging them, when in reality no one cares and might actually want to help them with their workout if they want it.
Karen: man, I joined planet fitness because I felt some Gymtimidation by muscleheads, but since I joined planet fitness I can do all the cardio I want at the pizza party!
by lxx47 January 15, 2017