WNW: Reflexives!!!

Thought that maybe if I put lots of exclamation points in the title, that reflexives would sound exciting!
Did it work? :-)
Lara from Overstuffed brought up a funky English quirk with reflexive pronouns. I tried to dig around and ferret out the reason for the quirk, to no avail. So instead of explaining the history of the quirk, we'll just discuss it!
Before we get to the quirk:
What the heck are we talking about?
Reflexive pronouns are ones where an action is being performed on the subject by