There's a lot of precedent for made-up/universe specific cursing in science fiction. And as much as we'd rather they just say fuck or whatever I like that the show is on standard cable rather than HBO or somesuch.
Doubleyou tee eff.
"YOU'D BETTER LOOK OUT BECAUSE I'M GONNA SAY...
I s-a-i-d FUCKING tonight.
I'll take you. I can't promise to stay soft the whole time, though.
ELL OH ELL!