I picked up a young couple from Circus Circus and was taking them to the Vegas Airport. The young woman pointed to a billboard and asked me

“Does that mean that Celine Dion has breast implants?”

I asked her what she was talking about and she pointed again at the billboard that read

“Jet Nightclub - Silicone or Saline?”

I started to laugh. She asked me why it was funny. I told her it was a private joke that people in Vegas only knew and one that we don’t tell visitors.