Basically, McCain is asked about birth control (Carly Fiorina from his campaign had earlier said 'it is unfair that insurance companies cover viagra and not birth control')
He froze, and then double-froze when the reporter, added that he had voted against birth control coverage.
His response? "I certainly do not want to discuss that issue."
He ended the freeze-up by mumbling again about his voting record, admitting 'he hasn't thought about it', and saying he would get back to her (the reporter). His eventual response was a canned 'I support competition in the free market.'
h/t Bitch PhD