The curious case of DMT and a man with a brain tumor

That's a myth.

You can't lick the skin of toads — more specifically that of the Sonoran Desert Toad aka. Bufo Alvarius as it's toxic.

That's a meme propagated by The Simpsons: https://youtu.be/uFn7VjYksBM?si=OecdfsmXyOTJJAeF.

You can however milk it's venom via glands and smoke it.

There's also insufficient evidence for the pineal gland as that is an unsubstantiated hypothesis proposed by Dr. Rick Strassman.

Plus, the Wikipedia page you linked to literally says:

> "...although the physiological significance of this biotransformation is not yet known."

Soo...