...scientifically VALID protocol
that will make our lives better?
The Big Bang Theory Season 3, Episode 3
You know, if this experiment is going to
be VALID, I suggest a neutral environment.
The Big Bang Theory Season 10, Episode 4
A VALID point, but unoriginal. B-minus.
The Big Bang Theory Season 8, Episode 2
Assuming that's a VALID reason not to go,
which it isn't...
The Big Bang Theory Season 2, Episode 23
He makes a VALID point!
The Big Bang Theory Season 8, Episode 3