That was a VALID hypo...?
What is happening to you?
The Big Bang Theory Season 1, Episode 1
Assuming that's a VALID reason not to go,
which it isn't...
The Big Bang Theory Season 2, Episode 23
No, it was a VALID hypothesis.
The Big Bang Theory Season 1, Episode 1
He makes a VALID point!
The Big Bang Theory Season 8, 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