BRB, booking a trip to Singapore. Though Starbucks has other coconut Frappuccino flavors on its menu, the coffee chain’s latest Frap sounds far and away the best take on the coconut flavor. Mixing toasted coconut with caramelized palm sugar, the Shiok-ah-ccino might just be the best tropical twist up Starbucks’s sleeve as of late. But alas, the drink is being released in… Singapore, as part of the brand’s celebration of the country’s 52nd birthday on August 9. The name comes from “shiok,” which reportedly is a slang term for pleasure — a name that makes more sense than wherever/however “Frap” came about, but no matter. (This…