"The difference between the almost right word & the right word is really a large matter--it's the difference between the lightning bug and the lightning." - Mark Twain

There are occasions where only the word fuck will do.

They're less common than what the habitually profane might guess (and I regrettably count myself among that group).

Still – there is a talent to swearing. Part of it is delivery. Part of it is timing. But the most crucial part is knowing when – and when not – to use a particular tool for a particular instance. The people who write the Onion's headlines have this air-tight.