I'm guilty by association, and one time I was just feeling mean.
One time I was flying with a friend, and we were next in line in MSP behind a NW 747-200 on landing. I looked up, and once I was able to make out the a/c, I told my friend to look up, and then casually mentioned that that was a 747, and sometimes at high speed to airflow off of its wings was powerful enough to blow smaller aircraft like, oh, I don't know, our DHC-8, clear onto their side. She almost wet her pants when it blew by us on landing.
And once my dumb sister decided, on an ValuJet DC-9 flight between JAX and ATL, to look back at the engines. She has very little knowledge of how turbofans work, and when she saw in inlet guide vanes not spinning, she screamed out, "WHY'S THE LEFT ENGINE OFF???" This was very shortly after the ValuJet crash, so naturally everyone on our side of the plane jumped up and looked out the windows to see what was going on. I had to explain it to her in great detail once we landed, but she couldn't have picked a worse point in time to scream about the engine being off!