[SERKIT]

:::::.....the rubbing of knuckles together. What in the world was that all about?::::: She was rubbing her knuckles together while Brandon was talking about flaming military poop barrels in Iraq and Afghanistan. Flies do what flies do.

[TangoLimaSierra]

..the rubbing of knuckles together. What in the world was that all about?

This was my answer earlier;

"My guess is; she had the speech in front of her and thought he was going to say something else so when she stood to clap he had gone off script and all she could do was rub her gnarled little mitts together."

[RitaOK]

A TELEGRAM account explains the “knuckle rubbing” is the common signaling of impending assasination, or death by other means, and gave an example of the signal where 4 days later some infamous guy was deceased. I forget whom.