Nero and the Magic Collapsible Ceiling
In the first century A.D., Rome was caught in a power struggle at the very top of the government. Nero had ascended the throne and become the emperor, but his mother, Agrippina, still held a lot of power in the state, including supreme authority over snacks and bedtime. Despite having been stripped of all honors and official power, she still held a lot of influence and was rather popular, and Nero eventually decided that she had to go. Nero really needed it to look like an accident but, being an ancient Roman and, well, Nero, he had an imagination that was more than a bit twisted. He eventually settled on a couple of plans that Rube Goldberg would be proud of.
And nobody else.
Especially not his mommy.
According to the ancient historian Suetonius, Nero rigged Agrippina's bed so that when she lay down in it, her weight would activate a mechanism that would cause the ceiling to collapse on top of her. The original plan, penned by a Mr. W. E. Coyote, had a pile of birdseed instead of the bed, but Nero was an improviser. The plan might have worked, despite (or possibly because of) spitting in the face of logic and sanity, except for one thing: Agrippina had a habit of using slaves to warm her bed before she lay in it, and it was the slave who was crushed to death. That's right: Agrippina's life was saved by a combination of slavery and hedonism. We'll say it again: Karma is bullshit.
Hedonism: the life-saving habit.