Look, Sheldon, sweetie,
I know you're feeling INSECURE...
The Big Bang Theory Season 3, Episode 13
No, no, then he's gonna think
I'm too INSECURE
The Big Bang Theory Season 12, Episode 5
Look, your whole sweet,
INSECURE thing is cute,
The Big Bang Theory Season 12, Episode 3
So INSECURE.
The Big Bang Theory Season 5, Episode 13
...that makes you a little INSECURE.
The Big Bang Theory Season 8, Episode 6