What information would every pilot know, but a civilian wouldn't that would show them to be a fraud if they didn't know it?

Posted by hallaa1@reddit | flying | View on Reddit | 224 comments

My sister is dating a man that's clearly lying about a variety of things, one of which is that he used to be a pilot. What kinds of questions could we ask him that would be more than obvious to a pilot, but none of us non-pilot folk would otherwise know?

Thanks for your help, we're concerned for our sister's welfare and hopefully this kind of obvious lie could help jar her away from the guy.