Dandelions. Some people say it tastes great. It's so bitter to me it's nauseating. When I take a bite, it just grows in my mouth and the sap turns soapy with a wrong condom taste. My mouth just puckered by the thought of it. Yuck.
Madness string 95863
There's a similar movement for raw honey, which is basically regular honey but can give you botulism, trigger allergic reactions, or straight up poison you. On the plus side, you get to eat the dead bee parts that are usually filtered out, so that's fun.