Deep Sea Giggles: The ocean floor is silent, except for the bioluminescent creatures that light up the darkness. Some of these creatures, like the barreleye fish, emit a sound remarkably similar to human laughter. Imagine the chilling echo of laughter in the abyss.Sleepwalking Surgery: Rarer than a nightmare, but very real. A condition called NREM parasomnia can cause people to perform complex actions while asleep, including surgery! Doctors have woken up mid-operation, fortunately before any harm was done.Microscopic Mitosis: Dust mites, those tiny eight-legged terrors living in your bed, can reproduce every two weeks. A single female can lay up to 100 eggs in her lifetime. Shudder.Forgotten Faces: Prosopagnosia, or face blindness, is a real neurological condition where people struggle to recognize faces. Imagine being unable to recognize your loved ones, living in a world of strangers.Smiling Corpse: Fulminating mercury, a historical poison, could cause the facial muscles to contract into a permanent, grotesque grin. Victims would appear to be smiling even in death.