Fool him twice... you can't get fooled again.
I'm not sure if I'd ever be able to pull that off again, because by now everyone knows how good I am at faking tone and I'd probably get paranoia-lynched at some point, regardless of whether I was actually scum or not, unless I had some really hard mechanical proof of my townieness.
For me, I already thought Zack and GH looked kinda scummy for other reasons- if I was townreading them I might have just thought it was odd and ignored it, but since I wasn't the CFD just looked like another red flag on the pile of red flags I was already seeing from them.
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