Drinking Habits

It's habit/custom to flick out the last dregs of any drink, be it water, juice, or cari.

You 'bottoms up' on the drink, and then flick the cup sideways into the grass, gravel or wherever, and then hand the cup back to whoever gave it to you.

I'm assuming this is done because any dirt or dregs from the homemade beverages in the drink will have sank to the bottom and you don't want to drink that. It's interesting how it's come to include water, even, too.