what're you doing(Internet slang, text messaging) what're you doing. Abbreviation for the Cantonese slang "ta fei kei", which literally translates to ' beating the aeroplane'. The PPG Industries Foundation has donated $6,000 to TICKETS FOR KIDS Charities (TFK), a Pittsburgh-based nonprofit organization that distributes tickets to arts. Looking for the definition of TFK? Find out what is the full meaning of TFK on Abbreviations.