
- Hey, what's with him?
- Penny's been keeping him up at NIGHT.
The Big Bang Theory Season 2, Episode 3

But it's Chinese food NIGHT.
The Big Bang Theory Season 12, Episode 20

- Good NIGHT, Leonard.
- Night.
The Big Bang Theory Season 5, Episode 14

We were talking about it, and then
one NIGHT we got a little reckless.
The Big Bang Theory Season 9, Episode 16

Every show NIGHT, Johnny and I
The Big Bang Theory Season 12, Episode 24