These unappealing-looking slug-like objects are not the best example of their common appearance, which more often resembles the face of a horned animal, or a bat (which of these just depends on how you look at it).
Still, & actually even moreso...
They are toxic raw & the jury is out on whether or not they taste good enough to be worth cooking, but perhaps it's as much a matter of cooking them properly.
It seems as much up for question whether they're actually a fruit or a nut. The latter seems more likely, considering their hard outer shell, "moustache fruit", the name I was familiar with, appears to be something of a misnomer.
Devil Pod, Bat Nut, Bat Fruit, Goat Head, Bull Nut, Buffalo Nut, 菱角, lin jiao, moustache fruit
They seem to have sparked the imagination & name-giving facilities of rather diverse groups of people.
The plant itself is an acquatic plant found in Asia - where it's fruit(? nut?) is regarded by some Chinese as a lucky food due to it's bat-like appearance.
In other places their generally marked resemblance to a goat or bat has linked them to black magic sacifice.
All in all, it's pretty silly.
I want to try one now.
To eat, not to wear.
A lin jiao does not a deranged-looking Charlie Chaplin make.