There have been signs. His food is kinda odd. When you come back from lunch, it’s not pizza he was eating. But what was it? You can never quite place the smell. His jokes. Classic dad jokes aside, who makes jokes about the speed of light or about gravity. It’s not really funny and it kinda makes you wonder. Matching clothes. It’s gotta be hard for aliens to understand Earth fashion. You can have a little sympathy there. It’s probably not his fault. The stories. Sometimes he tells stories about New York City or Europe like he was there yesterday. That’s not possible, especially not both. Is it? YOUR TEACHER MIGHT BE AN ALIEN. HE’S GONE FOR 45 MINUTES. THE EVIDENCE IS IN THIS BOX!