Also Filipino. This is can be considered a twice borrowed word since we also use it in English. Etymology: *Shooters* make *shots*, a gunner is a *shooter* This guy isn't a waiter or bartender. In a drinking session, among family or friends, this person does the pouring and refilling. A single glass is shared, after one person drinks, the glass is refilled and passed to the next person. This is yucky to most people—share the germs, share the disease. Added a video: https://www.youtube.com/watch?v=FL7rdKRvMnk