Have you ever been drunk to the point where you cannot tell if your beer mug is empty or not ? Well, there is a solution for everything. This Beer Mug has a sensor that tells you when it needs to be refilled by saying ”Your beer is running dangerously low”. After few sips it says to you “Refill immediately, danger of sobering up” so that you never forget to refill. Costs $35USD. I can really picture bars getting these mugs and force the poor drunk people to drink drink and drink !