Like all my underwear, that NOTEBOOK says,
"Property of Sheldon Cooper."
The Big Bang Theory Season 10, Episode 19
Okay, it's just a NOTEBOOK.
What's the big deal?
The Big Bang Theory Season 10, Episode 20
Dreamily doodling
"Mrs. Leonard Hofstadter" in a NOTEBOOK?
The Big Bang Theory Season 4, Episode 9
Where's my NOTEBOOK?
My NOTEBOOK's gone. Oh, no.
The Big Bang Theory Season 10, Episode 20
I did it with you
when we rented The Notebook.
The Big Bang Theory Season 4, Episode 9