After giving us long and detailed medical instructions:
Nurse: Carolyn, you have a great support team
Mom: <eyes closed, nods slightly>
Nurse: It's nice to see a family that is so clinically....
<really long pause>
Me: Sorry, you seemed stuck.
Nurse: Oh Carolyn, does the sense of humor come from you?
Mom: <eyes still closed, manages a tiny smile and a nod>