This is fucking crazy.If u reverse Jingle Bells there are a load of hidden Satanic messages.Heres is a clip.Listen real closely.You will have to turn ur speaker up to hear it properly.
http://media.spikedhumor.com/8944/Jingle_Bells_Reversed.swf
http://media.spikedhumor.com/8944/Jingle_Bells_Reversed.swf