![I sense that's not sincere,
although I have no idea why.
I sense that's not sincere,
although I have no idea why.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
I sense that's not SINCERE,
although I have no idea why.
The Big Bang Theory Season 3, Episode 11
![A, that was not a joke,
that was a sincere request.
A, that was not a joke,
that was a sincere request.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
A, that was not a joke,
that was a SINCERE request.
The Big Bang Theory Season 6, Episode 24
![And I want you to know that
that is sincere. I do feel bad.
And I want you to know that
that is sincere. I do feel bad.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
And I want you to know that
that is SINCERE. I do feel bad.
The Big Bang Theory Season 9, Episode 13
![...and if I can figure out a way to do so
and sound sincere, I will.
...and if I can figure out a way to do so
and sound sincere, I will.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...and if I can figure out a way to do so
and sound SINCERE, I will.
The Big Bang Theory Season 4, Episode 9
![If you're interested in making
a sincere effort to be a good teacher...
If you're interested in making
a sincere effort to be a good teacher...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
If you're interested in making
a SINCERE effort to be a good teacher...
The Big Bang Theory Season 8, Episode 2