The Foo Fighters and Bush are only too happy to engage in a war of words now that the long-standing Oasis vs. Blur feud has lost its edge. This latest battle of the bands began when Foo frontman Dave Grohl began bad-mouthing Bush in the press; he was also spotted onstage in London wearing a Bush T-shirt with the "S" in the band's name turned into a "$." Further intensifying matters is the belief by some in the Foo camp that Bush chose Veruca Salt as an opening act to get under the skin of Grohl, who's been romantically linked to Veruca Salt guitarist Louise Post. Follow so far? Yesterday, at the K-Rock-sponsored Dysfunctional Family Picnic concert in Forest Hills, N.Y., which featured both bands, Bush responded to Grohl's wardrobe choice by creating "BU$H" T-shirts for their production crew to wear with an ambiguous "yeah" written on the back. "I was thinking of doing 'This is a Call' by the Foo Fighters," Bush frontman Gavin Rossdale joked prior to his band's headlining set. Rossdale was headbobbing stageside during the first few songs of the Foos' set, but later showed his distaste for Grohl and Co. "I can understand he's really talented but his lyrics never really meant anything to me," Rossdale said. "And since the mouth he's had about me, I find myself liking him even less." Since the release of Bush's debut, "Sixteen Stone," critics have chided the British act for copying Nirvana's sound. "He's surely too musical to think that," Rossdale responded. "It's kind of interesting since he went to the producers [Clive Langer and Alan Winstanley] of our first record and asked them to do the recent Foo Fighters album. It has to do with naughty little jealously, really. Why should I infiltrate his world in any way? Life is too short. So is he." Grohl's response to Rossdale's was decidedly brief, mostly because his handlers whisked him away before he could answer the charges. Smiling, Grohl said, "It makes for good copy." Yes it does ...