Yes, the seven necked guitar, according to wikipedia called the "Sevener". Sadly I couldn't find any good photos of it online, but luckily I found a video from Portland this year. When I saw them setting up I thought: "Whoah, that things huge, he's going to need a stepladder to play it." Of course he didn't, because he just hit the thing with sticks:
It's like he thought "guitars sound great, but I just like hitting drums so much... wait a second..." Obviously beating on it with sticks tends to knock it out of tune, so for a while the other guy's job was to retune it. The sun was searing too, so Eye was wearing a huge farmer's hat too, that added to the whole... insanity of it. Seeing them was very special for me since I've wanted to see the Boredoms/V∞redoms for years now, and they actually played Birmingham, my hometown, about a month after I left for Japan. That's kinda annoying to be honest, so now I feel like the world's been set to rights a little.