As stated in this group, Poe's Law reads,
"Without a winking smiley or other blatant display of humor, it is utterly impossible to parody a Creationist in such a way that someone won't mistake for the genuine article."
Is the introductory clause of qualifications really necessary? I think it should read more like this:
"It is utterly impossible to parody a Creationist in such a way that someone won't mistake for the genuine article."
Even with smileys or blatant displays of humor, stupid people often simply don't perceive irony/satire. Even intelligent people who are not up to speed on a debate can often be confused, though they are more likely to clue in with some hints. Even with hints, though, stupid people often just kinda roll with even the craziest satire. After all, there are those on the right that think Stephen Colbert is right-wing because of the preposterously right-wing crap he says on the Colbert Report. You've gotta be pretty brain-dead to miss his clues, but people manage.