To make even an idiot understand it, you should just tell him about it. Just go directly at him and... PLEASE TEACH US! KEINE SENSEI! Hm hm... Another case has been resolved! The world's p*nis Don't mind any of those. Boys love these kinds of childish play, after all. Wait a..... UOOOOOOOOOOOOOOO!!!? Do you get it!? Touch it even more!! Look at it! Look! Here, look at these! I'm a girl, alright!! But if you're that worried about it after all, then there's a way to stop it. You want to see the lower parts!? Then fine, go ahead!! Take a good look at it!!! UUOOOUOOAAH!!? 5 minutes later Onee-chan J-j-j-j-just calm down please! It's my fault, okay!!