A traveler’s confusion at an airport checkout screen has become the latest flashpoint in America’s argument over tipping, and it started with a $6.49 bottle of water.

TikTok creator Clay Moss, who posts as @drclaymoss, filmed himself at a self-service shop inside an airport just before a flight. He scanned the bottle himself, with no cashier, no barista, and no server involved. The payment screen then offered tip options of 0%, 15%, 18%, and 20%, with 18% highlighted as the default.

Moss tapped 0%. He then swept his camera across the shop to show there were no employees in sight and asked, “Who am I tipping here?” The video has drawn hundreds of thousands of views, according to published reports.

The clip is not the first of its kind. A similar video from 2023 showed an airport kiosk prompting a tip on a bottle of Perrier, and shoppers have posted comparable screens from other airports, coffee shops, and fast-food chains. Critics say the pattern shows how digital payment systems have turned a voluntary thank-you into a default setting that customers must actively decline.

Defenders of the prompts note that some point-of-sale systems let businesses pool tips and distribute them to workers who stock shelves, prepare food, or maintain the kiosks. It is unclear whether the machine in Moss’s video does that. Moss did not name the operator, and it is not known where any tip would have gone.

What is clear is that the customer did the work. For consumers already paying airport prices, seeing a preset gratuity on a self-serve transaction raises a simple question that businesses haven’t always answered well. A tip is supposed to reward service, so who provided it?

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