I reside in Northern California with my spouse, our cute twin boys, and our huge fluffy Bernese mountain dog. The Pythagorean cup (see image) is made up of a little siphon concealed in a very rod placed within the mug center. The cup retains liquid if crammed under the peak https://www.etsy.com/listing/1016369311/i-dont-need-google-my-father-knows-it?ref=shop_home_active_52