The story
- Malay · borrowed fromke belakang pusing
- English todayke belakang pusing
Unadapted borrowing from Malay ke belakang pusing, a military drill command used in the Singapore Armed Forces, meaning to “turn and face the rear”, i.e., to turn 180 degrees and face the other way.
Etymology from Wiktionary, CC BY-SA 4.0.