You mock the sphincter,
but the sphincter is a class of MUSCLE...
The Big Bang Theory Season 4, Episode 2
One more floor
and I'd be the pulled MUSCLE.
The Big Bang Theory Season 3, Episode 17
Don't move. Don't--
Don't dare move a MUSCLE.
Breaking Bad Season 5, Episode 16
Good thinking, I'll just be the MUSCLE.
The Big Bang Theory Season 1, Episode 1
Enlargement of the heart MUSCLE,
or hypertrophic cardiomyopathy...
The Big Bang Theory Season 3, Episode 11