I see no reason not to use "frack" outside of BSG, been doing it for years.  Been using "frell" outside of Farscape for even longer.  Both have entered the English language, so depending on how long this setting is from modern day (I don't recall seeing a year, but could have missed it), the 21st c. stuff could be remembered, or could be back in vogue (language does tend to go in cycles, says the English prof).<br/><br/>On the other hand, I've been using the hybrid "freck" in my own SF novellas.