G14 classified
A super secret thing that will get you killed if someone finds out. It's like the government's version of a really bad secret.
'This is G14 classified!' he said, like it was a death sentence. It was just a coupon for a free coffee.
She leaked a G14 classified document. It was just her lunch order.
He got executed for leaking a G14 classified thing. It was a bad joke.