Apparently the Joe the Plumber rhetoric is so insipid that even Palin feels embarrassed to have to use it. From Tapper:
The Alaska governor said the election in 18 days “is the choice between a candidate who will raise your taxes and that threatens our future, and a leader who’s going to Washington to work for Joe the Plumber, as you heard a lot about last night. And I, I begged our speechwriters, ‘Don’t make me say Joe the Plumber, please, in any speeches.’
“And I was asked, ‘Just one time, just at this fundraiser.’”
Maybe she resents the displacement of old Joe Sixpack from the spotlight. You would think that she would have more sympathy with her co-running mate as someone whom the McCain camp also failed to vet thoroughly.