
might be
a universal CONSTANT.
The Big Bang Theory Season 12, Episode 23

Your CONSTANT tardiness, your singing.
The Big Bang Theory Season 3, Episode 7

they just stay home
and have CONSTANT coitus.
The Big Bang Theory Season 11, Episode 9

Yeah, and maintain a CONSTANT condition
of properties like temperature or pH.
The Big Bang Theory Season 6, Episode 2

And an irrational CONSTANT.
The Big Bang Theory Season 5, Episode 16