Same with the ninnies that realise they are driving slower than the limit only when you proceed to overtake them - then they speed up to match you, and you either have to drop back, or accelerate above the speed limit to over-take them. I find that a LOT on the road from Canberra to Sydney or Canberra to Yass.
Again, most of the time it's a middle-aged guy in a 4WD/Ute/SUV that is "defending his masculinity"...how dare a puncy little Ford overtake his Ranger/Triton/F-150/Patrol/Xtrail/Pathfinder/CX-5/Tiguan/Amarok/Pajero (it's amusing what Pajero means in Spanish - rather apt a lot of the time
https://www.spanishdict.com/translate/pajero - did Mitsubishi have a sense of humour in it's marketing strategy?)