
- Is it DIET?
- That's what you ordered.
The Big Bang Theory Season 4, Episode 23

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

I'm sorry, Galileo drank DIET Sprite.
The Big Bang Theory Season 4, Episode 9

changed her DIET,
and in a few months, she...
The Big Bang Theory Season 7, Episode 16

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