
15 years of CONSTANT ridicule.
The Big Bang Theory Season 11, Episode 11

I'm sorry. Amy is
the one CONSTANT I can count on,
The Big Bang Theory Season 12, Episode 23

a CONSTANT reminder
that of the three of us,
The Big Bang Theory Season 5, Episode 17

- That's an interesting tie clip.
- Oh, thanks. It's Avogadro's CONSTANT.
The Big Bang Theory Season 9, Episode 10

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