I scare the living shit out of consultants, because a lot of them made the mistake of assuming I'm just a dumb firie - the uniform means I don't look like my corporate IT peers at all - but quickly recoil and backtrack when I ask direct technical questions they don't expect and should know the answer to, or call them out on their misleading (if not outright false) statements.
My supervisor loves me, even though he doesn't love the disruption as much, because it leads to better outcomes for the organisation.