Foxface - Curious Japanese fruit

This fall I noticed different Ikebana pieces in Japanese hotels which were included a strange yellowish kind of fruit. Japanese people told me it was called "Kitsune gao", meaning Foxface.
Searching a bit further on the net it was revealed that "Foxface" was also commonly used in English. Other names for this strange fruit are: Nipplefruit, Titty fruit, Cow's Udder, Five fingered eggplant or 'Apple of Sodom".
Foxface would be family of eggplants and tomatoes, and bears fruit in fall.
The fruit is not edible and even poisonous, but it is used for decoration. And it is perfect to fit in ikebana pieces as it doesn't require water and will last for two months.

By the way a person called "Kitsune gao", fox face person in Japan, would be considered a person with feigned ignorance.