This gallery is focused on the prospect of comely idols and amateurs, both engaged in a wide variety of self stimulatory acts which have come to be known in Japanese mainly as オナニー / onani, or onanism.
As you will recall, this term refers to the biblical Onan, who was struck dead by God for apparently wantonly spilling his seed outside of a woman.
Behold the onanists:
See also the similarly themed yuri idol gallery.
Anyone minded to complain about the natural state of these ladies is invited to hold their tongue, or better yet to rectify matters by contributing images for a paipan gallery…