Bangag in Bisaya means a hole; a pit
Sample:Ayaw agi diha kay naay bangag (Don’t go there, there is a hole)
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Word Bangag is not bad itself, but sometimes it is used in a swearing phrase meaning which change it’s context). Pamalikas.
Sample:Bangag sa imong inahan (vag*na of your mother)
Anak ka sa bangag sa imong inahan (You’re a son of a b*tch)