When youâve tried all angles to fix a situation and none of them work ; you throw up your hands and walk away.
When the answer eludes you, you just give up.
Uttered in frustration
Greg is trying to explain to his girlfriend that he has a good reason for missing their dinner date; however she was not having it . So he threw up his hands uttered fuck it as he walked away.
When people really do not like each other but will be cordially sarcastic to one another so as not to cause any drama and draw attention to themselves at social affairs.
Sandra is having a birthday party she's friends with Jane and Sally . Sandra decides to invite Jane and Sally she knows they are friendenemies ; she leaves it up to them to accept or decline. They both show up and are cordial / sarcastic keeping the peace for the sake of their mutual friend's party.