You're mid-sentence about something that actually matters, and they do that thing where they nod while their eyes are clearly reading a notification about a 15% off coupon at a shoe store they visited once in 2019. You pause, hoping they'll notice, but they just keep nodding—a little faster now, like they're trying to speed-run the conversation so they can get back to their phone. The worst part is when they finally look up and ask you to repeat everything, and you realize they weren't listening, they were just doing cardio with their neck.