Heaviest song ever (metal/rock)?

every song from slayer's diabolus in musica

Born of Osiris - Bow Down

I like every things about music

Metallica - seek & destroy great song..

Have many sounds to choose its difficult to choose one

Metallica-Master of Puppets

the heaviest songs ever would be :
Antaeus-Inner War
Antaeus-Intravenal Call
Sepultura-Beneath The Remains
Sepultura-Arise
Death-Pull The Plug
KoRn-Somebody Someone
KoRn-Ball Tongue
KoRn-Beg For Me
KoRn-Bottled Up Inside

Dimmu Borgir - puritania. i like it loads

Metallica - the one

Old Man's Child - Black Marvels of Death