A Facebook Friend who constantly posts or re-posts religious or political slams...or other "In-Your-Face" type content.
Jane: Did you see what your cousin posted on Facebook? I don't know why we're Friends...he's always posting stuff that pisses me off.
Joe: Yeah...he's my In-Your-Face-book Friend. If he's posted that Chick-fil-A crap once, he's posted it a thousand times! Enough already...get that shit outta-my-face, man!