[Finnwolf]

I also searched and another definition is Big Fat Liar.

[left that other site]

I came up with that too on a search, but somehow it didn’t fit the context of the many times I have seen it in FR threads.

Usually it was a sort of “agreement’ rather than “rebuttal” of a post.

I never use it, as it does seem to cause confusion.

so “Bookmark” serves the same purpose, though not as quick to type.