Knowing I am right about something and having the proof to back it up but allowing someone to make a bit of a fool of themselves insisting otherwise and making accusations without foundation. The calmly producing said evidence calmly and without further comment.
Not something I would do to nice people but it's perfect for bringing the office Hitler down a peg or 2 when she starts.
PM Awards General Poster of The Year 2015, 2016, 2017. Probably robbed in other years