In a way they tell it to your face, they just do it in riddles, when you're distracted, or pretending to be joking.

It is much smaller, and works with something called a wall. Bluebird is just that a wall of classified information.

We're gonna build a wall, and we're gonna make the blue birds pay for it!

...Mr. Blue bird on my shoulder. It's the truth. It's actual'. Everything's satis-CLASSIFIED!!!