flexible friend
noun/ˌfleksəbl ˈfrend/
/ˌfleksəbl ˈfrend/
(British English, informal, ironic)- a humorous way of referring to a credit card after the phrase was used in British television advertisements for the former Access card in the 1980s
灵活的朋友：在1980年代英国电视广告中为前通行卡使用过的短语后，用幽默的方式提及信用卡