Every night out with millennials ends with an accounting session. "Okay, John, you bought me a beer, so I'll send you $6. Steve, you rode the Uber with me, but I had some of your guac, so I'll request you for $1.38. Dave, we each bought each other a beer. I think the price difference was $1, so I'll send that to you."
What ever happened to saying "you got the last round, I'll get this one" and calling it even?