Here’s one way:

1. Have a child who is morbidly curious
2. have child bring home library book
3. called “Venomous Creatures”
4. Read and discuss
5. Pay particular attention to the comparison of neurotoxins to hemotoxins
6. Say “Black Mamba” repeatedly, cuz it sounds mean. Okay, venomous. Two drops of venom can kill.
7. Did I mention discuss? That’s a big part. The Q&A.
8. Focus for a bit on the snakes of Australia.
9. Did you know an adder isn’t necessarily good at math? Now you do.
10. If snakes aren’t enough, also discuss frogs and lizards who are, well, venomous.
11. “Red and yellow, kill a fellow.” Say it with me.
12. Red and black, venom lack.
13. Do you know what ‘arboreal’ means? It means it hides in trees. So it can jump down and eat you. Really.
14. After an hour or so, announce that it’s bedtime.
15. Send child to top bunk. Listen to child describe tree-like qualities of top bunk. Child thinks he may be arboreal now.
16. Child will fall asleep instantly, and without hesitation.
17. Really. Trust me.