Buang is a Cebuano term for crazy. Cebuano is an area dialect when you look at the Philippines. Buang is typically a harsher word than crazy. This is used as a curse if you're aggravated and that can be applied in tandem with other known Cebuano cuss words like the loves of Yawa, Pisti and Atay. it indicates "crazy" in cebuano or something like that..