It was sparsely sourced,
but I think the science is VALID.
The Big Bang Theory Season 1, Episode 3
He makes a VALID point!
The Big Bang Theory Season 8, Episode 3
Assuming that's a VALID reason not to go,
which it isn't...
The Big Bang Theory Season 2, Episode 23
That is not a VALID order.
Game of Thrones Season 6, Episode 8
...where a tray of flatware
on a couch is VALID?
The Big Bang Theory Season 1, Episode 2