They got it from an Alice In Chains song ("Godsmack" from the album Dirt) and "smack" is about heroin abuse. The "God" part is about how heroin makes you think you only need the drug. I can see where people get religion from but no. And pretty sure they used to be an Alice In Chains cover band
...Fair with? I am trying to rack my brain as to who Godsmack came into the Arizona State Fair with last year (2011). It is driving me crazy cause I can't get the name out of my mouth??????
It was Five Finge Death Punch.