You don't know where this is, what they're watching or what they're doing.
But you know they're up to something.
This scene looks fairly common. I had a college buddy who'd make that exact face on the right. The pencils behind the ear technique has long since left the culture I'm afraid. We'll say I'd fill the place of the guy in the middle. He looks just tame enough, but just enthused enough.
Of course I'd never cheer on Texas. Hook 'em anyway.