By a window is likely where Tommy meets Ororo. He's topping up his glass of juice with something decidedly less innocent and slightly more potent when he hears someone coming, and hastily screws the lid back on his flask and shoves it back in his blazer pocket before turning around.

"Hi there. You need some fresh air, too? There's a lot more people here than I expected."

If he keeps talking, maybe he can distract her from thinking too much about any odd behaviour.