This is what I read this thread as:

Taran: My epeen is huge!
Sin: Your epeen is nothing compared to mine
Taran: Fuck that, my epeen puts yours to shame
Sin: Your epeen is a vagina compared to mine, so I'ma go ahead and fuck it
Taran: Hey Sin, that was my asshole, this is my epeen!
Sin: No difference that I can see!
Taran: Here, let me show you *sends dick pic*
etc, etc.

You two need to go get a room already.