‘Well, what did he recommend? Those effells are a pain in the neck, only for bachelors.’ 1954, Doris Lessing, A Proper Marriage, HarperPerennial, published 1995, page 41:
You could buy FLs quietly in chemists' shops and often in barber shops. 2012, Ian McCall, Going Going Gone, page 94:
Used and discarded Fls–French letters–floated in the slime, little opaque vessels carrying human seed into oblivion. 2005, Shilpa Agarwal, Haunting Bombay:
(abbreviation, alt-of, slang) Abbreviation of female lead.