Fkelly and Writersoul: If you were tamei, you would say it, which means that tamei people and non-tamei people both say it. Writersoul counters that if she were tamei she would know that that is what she’d be expected to say and would avoid saying it, but that would be a bad decision because since people who are not tamei say that they are not tamei, the only people who could say something else are tamei people who realize what they ought to say and diverge from it. But by diverging, she’d be giving away that she’s tamei and thus would not say it.
My point wasn’t that she should say something else, my point was that since tamei and non-tamei people both say it, saying it is a waste of words.