Introducing Prime Minister Narendra Modi to a massive crowd at London's Wembley Stadium on Friday, British Prime Minister David Cameron borrowed his catch-phrase 'Acche Din (good times)'. "They said Acche Din Aane Waale Hai, under Modi 'Acche Din Zaroor Ayenge' (Under PM Modi, good times will come)," Mr Cameron said in his remarks before PM Modi's address to some 60,000 members of the Indian community.