A couple have gained thousands of fans after they 'counter-protested' anti-abortion pickets with bizarre slogans like 'Bring back Crystal Pepsi' and 'Who farted?'.Grayson and Tina Haver Currin came up with the idea in March to break the ice with pro-lifers outside an abortion clinic near their home in Raleigh, North Carolina.Since then the photographs of their surreal placards have gone viral - prompting dozens of other pro-choice activists to join them every Saturday morning.