Not that it will have any immediate effect, but - if you wear the right skin and attitude - you can leverage your perceived position as being on the in group to sow seeds of doubt against the whole in-group/out-group thing. These people will bend over backwards to be perceived as worthy by the in group, which makes them highly fuck-with-able

Get it in their head that they are part of the out group for even bothering with the in-group/out-group nonsense