Derogative for "gay" (like faggot). It is used also, between (male) friends, in the meaning of moron,
asshole or similar, transmitting anger or
disappointment for
something, or just to mock.
(
Una ragazza a un ragazzo che non la bacia): Ma che sei frocio?
(A
girl to a boy who does not kiss her): But what are you, a faggot?
(Tra amici): 'Sto frocio non m'ha passato le risposte dell'esame!
(Among -male- friends): This
asshole didn't give me the exam's answers!