Voldemort is laughing.
He is about to die, yet he is laughing.
He knows his Horcruxes are dead too, yet he is not afraid.
He. Is. Laughing.
Like a mad wizard.
In his final moments, he solved the mystery, why he lost!
Dumbledore!
He respected the wizard.
But to think he was dead, the moment he attacked on Potter boy!
Wonderful!
A spell. Yes. That's how he was defeated.
Lord Voldemort.
Tom Marvolo Riddle.
Had solved the problem.
The one who had created it in first place was already dead.
Dumbledore.
"AVADA KEDAVRA" he heard.
But the problem persisted.
Harry Potter.
"The BOY-WHO-LIVED!"
No wonder, he felt magic when he said that.
He wondered if every wizard felt it too.
He wondered if the boy himself knew it or not.
maybe not, he decided, knowing Dumbledore.
And he had just performed the spell again.
He would die.
He was laughing by the time spell hit him.
Too late.
Harry Potter was looking at his fallen foe. It was disturbing. To see smile on the face of monster. Even when dead.
Some part of wizarding population still shivers when they tell the enigma of smile of fallen dark lord. It was Mona Lisa of Wizarding Britain.