He Ain't

Student [Kaneisha]: "Mr. Vonn, can I go to Mr. Stevens' class?"

Me: "Not right now, Kaneisha."

Kaneisha: "But Mr. Vonn! I have to work on a project for his class and I need his help!"

Me: "Kaneisha, I think he's teaching right now."

Kaneisha: "Trust me, he ain't."