Silly Cissy... And yes. Voldemort is totally the one who screamed "yeeeeey" when she said that harry was dead.
This is based on the opening scene in the second to last chapter of Deathly Hallows. Harry comes back from the Kings Cross limbo, and Draco's lovely mother checks for Moldyshorts to see whether Harry is alive...and in the proccess JKR says "her long hair tickled his face."
When I read that I just randomly decided that it'd be pretty hysterical if all the hair tickling made Harry sneeze.
GAME OVER! Lawl. Didn't happen though. Wouldn't've been much of a book if it did...XD