Afterlife Lesson

Poison avoidin’s a good thing to do:
If you breathe, touch or taste it, who’s most annoyed? You.
Venom’s a friend if it springs from inside;
If it’s alien then there’s a chance you’ve just died.
What’s the difference between them? Stick this in your head:
When it’s venom, you’re bitten ‘n’ then end up dead.
Conversely, if you do the biting and die,
That was poison. Next time you’ll know better. Good-bye.