Vagina Nest
According to some reports in 2018, and possibly earlier, women were told by an Etsy seller that to "restore the elasticity of the uterine wall" one must insert ground up wasp nest material into the vagina. Which, most sane people know, is absolutely batsh*t insane.
Kirsty laughed at the idea of a vagina nest outloud but internally was questioning whether there was any scientific evidence behind it.