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