I know there used to be a section that helps answer questions. But since the "oasis" change, I can't seem to find it.....I don't know if it still exists and I'm looking under the wrong title, (I search under "Questions"). So I guess I'll just ask here.
Anyway, about Roderich. It says on his profile that the mole on his face acts as his erogenous zone. Where did that information came from?
Thanks to the Italian brothers, a lot of people assume every other characters with an ahoge is also their erogenous zone.