Verb
give a flying fuck (third-person singular simple present gives a flying fuck, present participle giving a flying fuck, simple past gave a flying fuck, past participle given a flying fuck)
(usually in a negative use, vulgar) To care whatsoever.
Synonyms: see Thesaurus:care
I don't give a flying fuck about how many laps I can run in 20 minutes.
I couldn't give two flying fucks what your name is. I just want to know how much you're paying me.