Persistent stories to the contrary, no English swear words come from acronyms, and there are good reasons for that:
Acronyms are intrinsically euphemistic. They are used to camouflage rude, offensive, or otherwise unendurable things (often just unendurably long).
And if you plan to be rude and offensive, camouflage is more or less beside the point.
Acronyms have only really been used to generate words since the mid-20th century.
Most of our serious swears, including George Carlin’s Heavy Seven, date back many centuries.