Whoa.
In 1999, radiologist Nicola Strickland went on a holiday to the Caribbean island of Tobago, a tropical paradise complete with idyllic, deserted beaches. On her first morning there, she went foraging for shells and corals in the white sand, when the holiday quickly took a turn for the worse.
Scattered amongst the coconuts and mangoes on the beach, Strickland and her friend found some sweet-smelling green fruit that looked much like small crabapples. Both foolishly decided to take a bite, and within moments the pleasant, sweet taste was overwhelmed by a peppery, burning feeling and an excruciating tightness in the throat that gradually got so bad they could barely swallow.
Source: This tree in the Americas is so toxic, you can’t stand under it when it rains – ScienceAlert