What? No! Good lord, I mean, it's not like we're laughing at our patients, but making a patient laugh, or laughing with them is GOOD for them and for you! For young AND old clients. I work in Peds, so that would effectively be like saying "No children are allowed to have any fun in here - EVER!". We have extremely taxing jobs sometimes, and if I can share a moment to giggle with a kiddo, that's not at anyone's expense, that makes the day go by. Especially if the session has started out a little rocky, and all of a sudden, something makes them laugh, it can change the course of the rest of the session for the better. Laughing with others is part of being socially connected and that's a huge part of our job.