Guys and beer, that’s the golden combination. The people at BBDO, an advertising agency in new York, developed a great idea. Meet the first social beer glass. A beer glass with a QR code on it. Once scanned it will place a tweet using your twitter account, update your status on facebook, checks you in on foursquare and downloads coupons. That’s good thinking. But they were even smarter, the QR code will only work with liquid of the same color as guinness beer. Now that’s using your brains!