: It is frequently shouted in unison by fans during the Intercontinental Derby between the two teams.
: Fans often note that despite the vulgarity, the chant has a "catchy" or rhythmic quality that gets "stuck in one's head". Fenerbahce Ananin Ami
It translates to an extremely offensive anatomical insult directed at the mothers of Fenerbahçe supporters. In terms of its "features" or how it is used in Turkish football culture: : It is frequently shouted in unison by
: Because it is often chanted by entire stadiums, broadcasters like beIN SPORTS (formerly LigTV) have had to mute stadium audio during live matches to avoid airing the profanity. Fenerbahce Ananin Ami
The phrase you mentioned is a vulgar Turkish football chant used by supporters to insult their rivals, Fenerbahçe .