My wife and I like the Castle TV series.
The producers of this show obviously have a particular audience in mind. Evidence of this is that on several occasions they have had a character use the euphemism, "Shut the Front Door!" instead of the FCC non-approved expletive, "Shut the Fuck Up!"
What I find humorous is that this so closely resembles the title of the Elders' manual, "Shepherd the Flock of God!"
STFD! = STFU! = STFOG!