Top definition
Another term for a small, limp, useless john
My ex boyfriend had a really 'subtle muscle' which is why I left him

or

Older men can sometimes suffer with 'subtle muscle'
by Daxine November 25, 2009
Get the mug
Get a Subtle Muscle mug for your cat Beatrix.

Available Domains :D

  • subtlemuscle.men
  • subtlemuscle.ninja
  • subtlemuscle.se
  • subtlemuscle.net
  • subtlemuscle.org
  • subtlemuscle.com