It bites you, then you die: Venomous

You bite it, then you die: Poisonous

You bite yourself, then you die: Canibalism

It bites itself, then you die: Coincidence

No, you are going to be eaten by poisonous snakes, its your choice to byte them to let the poison act before they start biting you.

A trolley problem in a different shape.

I think he meant “I’m going to feed you to my poisonous snakes”