I doubt Vodka is the answer... but it's worth a shot!
You'll never know if I've got water or Titos in my tumbler. But mind your business. I'm minding mine. This is why I had to have these custom-made, limited quantity tumblers made for me and my Broker Leather Herd.
Our Tito Cowhide & Leather Patterned Tumblers hold plenty of ice and drink with their 30-ounce capacity. These Hogg Brand tumblers are insulated so they are perfect for hot or cold drinks. The clear plastic lid features a slider to close completely and each Tumbler comes with a clear plastic reusable straw [it's hidden in the box- don't miss it!]