I thing one phrase in McDarren's comment may provide some additional focus for this discussion:

there are many, that when strung together to convey a particular meaning or message....

Had the post in question said

Fxxx your mother!

more Monks (this one included) might have agreed that it was "highly offensive" but as far as I can see, we have not defined "highly offensive" in sufficient detail to distinguish between sophomoric attempts at humor (yep, that's what I think the node under discussion one was/is) and "highly offensive" in the sense of troll-ery, bigotry, and the like.