
It's probably this
stupid DIET I'm on.
The Big Bang Theory Season 7, Episode 2

Sure. Take a Diet Coke, thank you.
Of course.
Breaking Bad Season 4, Episode 7

that she decided
to go on a DIET...
The Big Bang Theory Season 7, Episode 12

Wrong. She just took a sip
from his Diet Dr. Pepper.
The Big Bang Theory Season 6, Episode 2

Playing Halo? Watching Battlestar?
Drop some Mentos in Diet Coke?
The Big Bang Theory Season 2, Episode 19