A Joke Nobody Gets

OK, this is based on a chicken joke I saw on FB (Jenny's Think Tank and Holistic Comedy Bar - drop in sometime if you can find it.) It's a concept joke, I hope it gets around. But instead of just telling you, I'm making it a riddle.
An entangled particle said to its partner across the lab, "how do I get to the other side?"
What did the other particle say back?