It's the social PROTOCOL.
The Big Bang Theory Season 1, Episode 10
But we have a certain PROTOCOL here
that we need...
Breaking Bad Season 3, Episode 8
Implementing
power-failure PROTOCOL.
The Big Bang Theory Season 5, Episode 15
Well, I'm not sure of the PROTOCOL.
The Big Bang Theory Season 10, Episode 16
...scientifically valid PROTOCOL
that will make our lives better?
The Big Bang Theory Season 3, Episode 3