At the farm we used to have a two-strand electric fence to keep rabbits, raccoons, and the like out of our market gardens. Brilliant son comes home from college to discover we’d just adopted a new puppy from the pound, and decides the dog should be introduced to the fence. So he picks the puppy up and touches its snout to the top wire.
By lifting the dog, Brilliant Son became the electrical ground, so they both got zapped.
He’ll never do that again.