Can sometimes be spelled phlakansed, or flakaaaansed.
Singlish derogatory slang used to be exceedingly wasted, debauched and totally intoxicated, or even completely off your face drunk, for extended amounts of time. Strongly associated with Large inter-school sporting events such as the Big match between Royal college (wull) and St Thomas' college.
Person B: Flakaaaaaaaansed mayan!!!!
Person A: Flakansed???
Person B: Flakaaaansed!!
Person A: Machaaaaang!!!