Come to think of it, there isn't a thing in this world that makes me say or think:
"Ahhhh F.....".
There are things however that will make me utter one word responses out of disgust. The two most common ones are simply:
a.) "F _ _ _." or "F_ _ _!" (note: one is a statement, the other is an exclamation)
b.) "C_ _ _sucker!" (This one, almost always takes the form of an exclamation and rarely as a statement)
Both of these one word responses, usually happen when i'm commuting too and from work. Very rarely at other times. Excepting maybe if the power goes out at home. Then the appropriate response for me, is usually above mentioned item A in the form of a statement.