Dave Grohl on Metallica -- Enter Suck, Man

12/18/2008 2:28 PM PST BY TMZ STAFF
Dave Grohl lives in a world of sarcasm -- so while you may agree with him when he says Metallica is "lame" and "sucks," it's probably not what he meant ...

Dave Grohl: Click to watch
His thoughts on the new Guns 'n Roses album though -- totally authentic.