Doctor Who?

I had to take Sam and Vivian to my own doctor's appointment today at the last minute.  In the car, Sam asked me, "What is the doctor called?"
"Huh?"
"What's the doctor called?"
"His name?"
"Yes."
"Dr. Rohrer."
Pause.
Sam asks, "what does he talk like?"
"What does he talk like?  You mean how does he speak?"
"Yes."
"Like a regular person."
Pause.
"In a very loud voice?"
"No.  A regular voice."
"Is he a nice guy?"
"Yes, he's a nice doctor who is helpful."
"And he talks in a not loud voice."
"Right."
I wasn't following the conversation entirely so I just let it go.
When we were in the waiting room, Sam asked, "what's taking Dr. Lion so long?"
"Dr. Lion?  His name's Doctor Rohrer." (Pronounced "roar.").  I tried so hard not to laugh that I started tearing up.  He must have thought we were visiting a lion the whole way there, who roared instead of talked.