I thought we had that in the village during my childhood days but it was shorter. It was like a wooden bowl instead of looking like a mug but we use it for fetching water from the jar. My old folks were saying its content is more refreshing because of its natural material. Though as I grew older, I realized the challenge to that is when the wood starts to deteriorate.
We did not have that belief though of not putting it upside down. 😊