Thought.is

You are attending the wedding of your ex-girlfriend and Charlie. It’s a lovely ceremony. She cries a bit at the altar. You have a 5-cup thermos and a 3-cup thermos, and a large Costco bottle of Popov in the trunk of your rental car. You know from experience that it takes exactly 4 cups of vodka before you can’t process emotions. How do you measure out precisely 4 cups of Popov?