Diet Coke.
The Big Bang Theory Season 1, Episode 13
How hard is 65% Coke,
35% Diet Coke?
The Big Bang Theory Season 12, Episode 23
Playing Halo? Watching Battlestar?
Drop some Mentos in Diet Coke?
The Big Bang Theory Season 2, Episode 19
Diet Coke, please.
Breaking Bad Season 2, Episode 11
Sure. Take a Diet Coke, thank you.
Of course.
Breaking Bad Season 4, Episode 7