Anyone who knows this manhwa? As far as I remember there is a chatroom and the members are...

Anyone who knows this manhwa? As far as I remember there is a chatroom and the members are girls. Its a different story like anthology I guess. So, they're talking Abt they're experience in sex smthng like that. There is this one chapter wherein the girl talks about the other guy who scratch his between everytime then she eventually found out that he has small penis that's all I can remember. The title has dirty talk or talk dirty in it. Thanksssss (灬º‿º灬)♡