Maybe they meant tight-ass fucking, not tight ass-fucking?
The location of the hyphen seems to make a big difference, for instance, consider:
big-ass titties vs. big ass-titties
While I like big-ass titties, I don't think I would care for big ass-titties, that's sounds really deformed.
imagine a couple of breasts with ass-cracks in them and you'll get my point...
STRATEGY