language barrier.

I'm trying to teach my boss, Ernest, how to speak Spanish. I'm doing my best to immerse him in the language. I typed up a cheat sheet for him and taped it to his desk, and the only thing he ever remembers is when I say "tengo una pregunta para ti" because it sounds like I'm saying I'm pregnant, and he thinks that is hilarious. Obviously we're not making much progress. Our conversations always go something like this...
Ernest: "I need you to cover the midday shift today."
Me: "No puedo hacer, jefe! Tengo clase, lo siento!"
Ernest: "Stop it! Why does my phone not translate these things for me??"
Me: "No se, tio! Puedes lo google!"
Ernest: "All that work for a no."