You wanna come in for a NIGHTCAP?
The Big Bang Theory Season 4, Episode 9
Well, so am I.
Could I interest you in a NIGHTCAP?
The Big Bang Theory Season 9, Episode 24
You like to come in for a NIGHTCAP?
The Big Bang Theory Season 4, Episode 21
All we know is
they shared a cab and had a NIGHTCAP.
The Big Bang Theory Season 10, Episode 1
I'm, uh, having a NIGHTCAP,
you wanna join me?
The Big Bang Theory Season 6, Episode 1