From the SyFy network remake of the Battlestar Galactica series: The acceptable version of the swear word Fuck that would be approved by the network censors and not subject the network to FCC fines.
Also a substitute for Farting, screwing, pissing, etc. - situational dependent
What's your Fracking problem?
Who gives a Frack. (rhetorical)
What the Frack?
Would you two stop Fracking around.
Would you two stop Fracking.