What started me thinking about this was seeing the Perform (Taunt) skill. Basically, a character says some nasty, mean stuff to his enemy, pissing him off, and the enemy lowers his guard a bit. The defense to the taunt is the Concentration throw.
That all sounds well and good, except I was wondering what CON had to do with being able to withstand the insults somebody is leveling at you.
Isn't that just an Intimidate check which is countered by a (1d20+level+Wis+vs fear bonuses)? That's what I thought at least.
Or a Bluff check countered by a Sense Motive check depending on the way you go about it. In both cases it's Cha vs Wis, and Con has nothing to do with it.