Watch Johnson's face beginning at around the 7:50 mark as he says

[Uncle Joe]

"let me look right in the camera and tell you very clearly, Republicans are the ones concerned about health care" etc. etc.

1. He has to fight from cracking a smile at the beginning of his own cruel, tragic joke and 2. "he can't keep looking right in the camera" for more than a second before becoming self-conscious at his own bullshit while continuously breaking away to both sides

Thanks for the thread TexasTowelie