An 'Ajax fan' is a fan of the Dutch football club Ajax. The fans only stand up in big games in Europa, and they're a bit arrogant. In the years 2014-2018 no Ajax fans were found, but since 2019, some people are supporting them again beacuse of their success.
Man 1: ''What do I see? Ajax tops the league, wins the Dutch cup and reaches the UCL semi final.
Man 2: ''Let's be fan of them!''
Man 1: '' Yeah, than we can say: We Are Ajax, We Are The Best!''
Month later
Man 1 to Man 2: ''It's only a day ago since Ajax is knocked out of the Champions League!''
Man 2: ''That means it's only a day ago since we were an Ajax fan!