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
All desires are VALID
to a man with a full purse.
Game of Thrones Season 1, Episode 5
No, it was a VALID hypothesis.
The Big Bang Theory Season 1, Episode 1
...where a tray of flatware
on a couch is VALID?
The Big Bang Theory Season 1, Episode 2