For what it's worth, post #353450 is the previous page in this series. It _also_ has a confused idea of how anatomy works, possibly even worse than this.
Mom... What are you doing?Mom! Stop it...It's fine... Just leave it to mommy♪Your breasts... they're already like this ♪Really, it's alright... I'll take care of everything... Just enjoy my finger and think of it as a penis♪I will teach 準子chan (Junko?) how to play with an anus.