I mean, like, you're soooo appalled! Like, just really, really, unheard of, uber-appalled! So appalled that you almost can't even restrain yourselves from committing risky acts of boldness like sitting at your computers/phones and typing the words, "I'm appalled!"
What makes you think others who say "We're appalled!" on cue and in unison with you are truly appalled, as you are, just because they also say it?
Oh, and, say you wanted to fake being appalled over something you aren't really appalled over; what would/could you do in order to fake that?