Earlier quoted context omitted.
How was it at someone else's expense?
From the images in the article, @DapperDapo tweeted out loud, tagging @JFK, asking what the right handle was to file a complaint. @JFK responded. They then proceeded to state their complaint, and @JFK mocked them. > What's @jfk Twitter page. I have complaints. > Why are there 2 people working the customs line when two international flights just landed? @JFK It's very likely (keep in mind they were probably on mobile…
I ain't denying that he was being a goober to them, but "at their expense" implies its at their expense
I don't see how it goes further than, them getting to the next worker at the airport, saying "UGH, your PR on twitter sucks!", and then being told "maam/sir, that is not our twitter account"