It's "Halo" night.
The Big Bang Theory Season 1, Episode 7
So "Halo" night, huh?
The Big Bang Theory Season 1, Episode 7
Playing Halo? Watching Battlestar?
Drop some Mentos in Diet Coke?
The Big Bang Theory Season 2, Episode 19
- You're not going to Halo night.
- Yes, I am. It's Wednesday.
The Big Bang Theory Season 2, Episode 6
Oh, yes, it's Halo night.
Let me just dry my tootsies.
The Big Bang Theory Season 2, Episode 6