It's a blank NOTEBOOK.
The Big Bang Theory Season 10, Episode 18
I did it with you
when we rented The Notebook.
The Big Bang Theory Season 4, Episode 9
you showed me that NOTEBOOK,
and from what l saw--
Breaking Bad Season 4, Episode 5
Where's my NOTEBOOK?
My NOTEBOOK's gone. Oh, no.
The Big Bang Theory Season 10, Episode 20
We found a NOTEBOOK
at his place.
Breaking Bad Season 4, Episode 3