![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.](https://content2.mcqstudy.com/ss/tbbt-9-13-00:09:25.775.jpeg)
And I want you to know that
that is SINCERE. I do feel bad.
The Big Bang Theory Season 9, Episode 13
![Not to Not to](https://content2.mcqstudy.com/ss/tbbt-9-13-00:15:22.756.jpeg)
Not to "Sin City" but to "SINCERE city."
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.](https://content2.mcqstudy.com/ss/tbbt-4-9-00:12:59.237.jpeg)
...and if I can figure out a way to do so
and sound SINCERE, I will.
The Big Bang Theory Season 4, Episode 9
![Okay. Now, see you look sincere
but your words are completely false.
Okay. Now, see you look sincere
but your words are completely false.](https://content2.mcqstudy.com/ss/tbbt-10-6-00:13:04.576.jpeg)
Okay. Now, see you look SINCERE
but your words are completely false.
The Big Bang Theory Season 10, Episode 6
![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...](https://content2.mcqstudy.com/ss/tbbt-8-2-00:12:56.201.jpeg)
If you're interested in making
a SINCERE effort to be a good teacher...
The Big Bang Theory Season 8, Episode 2