Otako explains that girls with big boobs also have big areolae. Galko denies it, thinking she's talking about her.
Your butt has the same 
sensitive mucous membrane.
لدى مؤخرتكِ الغشاء المخاطي نفسه
Dieselbe Schleimhaut wie dein Hintern.
Se compone del mismo tejido suave y húmedo.
Ben, ton anus, c’est le même type
de muqueuse sensible.
Le mucose del sedere 
sono sensibili come queste.
O bumbum tem a mesma membrana mucosa.