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

This thing has to hold up
against a hearty potato-based DIET.
The Big Bang Theory Season 2, Episode 22

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

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

How hard is 65% Coke,
35% Diet Coke?
The Big Bang Theory Season 12, Episode 23