one guy was facetiming his sister, she was in Texas for work and I know this because they were yell-talking at each other. This went on for a few minutes so I got up, walked over and sat down in the chair next to him an asked if she was staying hygrated as I heard Texas can get really hot in the summer and that it looked like she has a bit of a sun burn.
The two of them were flabergasted. And the guy said "what are you doing???"
So I was like. "....well you included me in this call and I'm just worried about your sister."
He goes "Im having a PRIVATE conversation!"
So I goes "If it was private then how the hell do i know youre talking to your sister who is in texas on a business trip?"
Ultimately im not sure he really got the point but he lowered the volume because now he's worried about creeps like me listening to his conversations but at least he's behaving now even if he doesnt understand why