Do you know what "Aok Diko" means? Chances are, many Singaporeans don't. And that's exactly what Asnida Daud, 53, hopes to change with her performance at the upcoming National Day Parade (NDP). This year, the singer will take to the stage for the first time with Aok Diko — an original song she had written in the Orang Laut dialect. "Aok Diko means 'yes!'. In a conversation, when you say Aok Diko, it means you are reaffirming the person that you …