The word used to express your happiness / delight whilst or after hanging a coon / gin / aboriginal / boong.
The word is a derivative of boong and mint, the w links the words.
The word must be said assertively. With undulations in tone defining the contour of the word.
Dick shouted enthusiastically "We Killed him, we hung him, we killed the boong!!"
Wog replied in joy, "Bwint!"