You mock the sphincter,
but the sphincter is a class of MUSCLE...
The Big Bang Theory Season 4, Episode 2
That leaves you, by default,
as the MUSCLE.
The Big Bang Theory Season 3, Episode 17
Good thinking, I'll just be the MUSCLE.
The Big Bang Theory Season 1, Episode 1
One more floor
and I'd be the pulled MUSCLE.
The Big Bang Theory Season 3, Episode 17
Hey! I need some MUSCLE.
Westworld Season 2, Episode 6