![15 years of constant ridicule.
15 years of constant ridicule.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
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,
I'm sorry. Amy is
the one constant I can count on,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
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,
a constant reminder
that of the three of us,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
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.
- That's an interesting tie clip.
- Oh, thanks. It's Avogadro's constant.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
- 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.
might be
a universal constant.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
might be
a universal CONSTANT.
The Big Bang Theory Season 12, Episode 23