>>7
I've read enough horror stories about onaholes becoming biohazards if you get them dirty on the inside and don't clean properly.
This thread reminds me of an old fantasy I had about either selectively breeding or genetically engineering a pitcher plant to function as an organic onahole that feeds on semen and can survive vigorous thrusting.
The second generation could include an elaborate pipe structure that can shout "onii-chan! onii-chan! onii-chaaa aahh!!♡" I wonder how hard it would be to isolate the genes responsible for that behavior in imoutos.