Penso que não existe correspondente em português para esse termo.

Girls just wanna have fun, why do guys want FFun?
“FF” is shorthand for Fist Fucking, usually referred to just as fisting these days. Any time you see the double-F capitalized, either by itself or embedded in another word — unless you are reading about Marvel Comics — that is what is being referred to. (Exception: if the entire word is in caps — “RUFF & TUFF”, for example — it probably isn’t about fisting, even when the word is misspelled like this.)

You’ll also see references to “handball”, but that isn’t a sports alternative to tennis. “Handball” is a euphemism for fisting — “hand in a ball”, get it? (And in case you didn’t know, “watersports” doesn’t usually involve an Olympic-sized swimming pool.)

Hiding things behind euphemisms can backfire, though. Several years ago, our local leather club reserved a church-owned camp location for a weekend event, and we listed “handball” as one of the activities that would be available in the playspace (aka “dungeon”, but we didn’t use that word). One of the directors of the camp read our website and said “We don’t have a handball court, I wonder what they mean?”, so he looked it up online. We quickly had our contract cancelled. But karma comes around: they went into bankruptcy and had to sell the camp within the next year. Don’t fuck with leathermen, because we use our fists!

--------------------------------------------------
Note added at 7 mins (2019-03-15 15:51:15 GMT)
--------------------------------------------------

Por tratar-se de um resort gay, acredito que seja a explicação correta.