It is inspired by what seems to be a dirty trick by someone(S) at MSNBC. Links to related video are in the description box. Current title is: Was Joe Scarborough tricked by the McGurk effect?
MSNBC ran a clip with captions of “Ryan” over hard to hear audio chants of “Romney”. Scarborough reacts with a facepalm. The McGurk effect could explain the behavior.
Tweets done at the time conflict with the MSNBC version of the chanting: