Losing at the World Cup is bad enough. Being taunted by opposing fans makes it worse.
But when the national airline of the victors decides to crow like a bloated drunk, it's understandable that tempers flare.
On Sunday, the Dutch were very fortunate to defeat the Mexicans in the World Cup. For much of the game, they were losing. Though their equalizing goal was brilliant, the winning penalty was achieved by one of the most notorious fakers in the game, Arjen Robben.
His dramatic fall could best be described as professional, rather than caused by any painful incursion from Mexico's Rafa Marquez.
You might imagine, therefore, that there might be more relief among the Dutch than boasting. Instead, KLM, its national airline, decided to emit a tweet that was spectacularly ill-judged.
The words said: "Adios Amigos!" The image was of a departure sign with a graphic of a moustachioed man in a sombrero. Oh, and a poncho.
The reaction was everything that a sane, vaguely sentient human being might have imagined.
It was best summed up by Mexican actor Gael Garcia Bernal, who tweeted: "@KLM I'm never flying your shitty airline again. F*** you big time."
KLM's tweet was removed. However, the airline's Twitter feed has not, at the time of writing, been adorned with any apology.
Not all Mexicans decided to respond with anger. AeroMexico, the national airline, offered this: "Thank you for this great championship, we are proud and we await you at our home. #VivaMexico."
Accompanying these simple, classy words was an image of an arrivals sign.