It's not particularly more professional to cheekily use an obvious substitute in place of 'fucking', either. If you are saying "big ... fun ... rocket" or "big freakin' rocket" anyone over the age of 6 will know what you are doing and, if they are inclined to feel uncomfortable or offended, will still be so.

So for the most part I would say "either swear or don't", but if you are going to play that game, you need to be better at it, and call it something like "a big functional rocket" or "a big futuristic rocket", which is plausible, and then remain completely straight-faced, forever, never admitting in public or private there could be any other meaning for the acronym, ever. Leave historians a hundred years from now guessing.

"Wink wink, I'm not cussing!!!" is just another version of "I'm not touching you!!!".