Secret Christian Man

I had two conversations in code with students today. 

Incident 1.
Me: "Your name is Lydia. Do you like purple?"
Her: "Yes, how did you know?"
Me:  "I just did."

And three students pulled crosses out of their shirts.

Incident 2.
Him: "I chose the tulip."
Me: "Why did you choose the tulip."
Him: "Because of how it was designed."
Me: "Designed?
Him: "Yes, designed."

We looked at each other silently, just for a heartbeat, and each knew the other knew. He looked relieved.