If you didn't know, the Shamrock Shake is back at McDonald’s, and this year they have upped the experience with four flavors – one of which is the Chocolate Shamrock Shake. But wait there's more ... Mc Donald's has come up with a special straw for this shake that ensures you get the perfect balance of mint and chocolate with each sip.I can't make this stuff up I'm serious. McDonald’s hired two engineering firms to create the STRAW, which stands for Suction Tube for Reverse Axial Withdrawal. The hook-shaped straw is only available for a limited time at select stores. And there are only 2,000 of them available. See the New Straw and Read More HERE!