Whilst on a game drive in Liwonde National Park with students from the school I was teaching at, this male elephant decided to play with us. He let us follow him for a while and then decided to show us who was the boss. He gave us a nice mock charge, stopped about 10 metres from the car, had a massive tantrum (screaming, kicking dust, etc...) and stormed in the bush. The students were petrified.
I took the shot as the elephant approached the car with my 150-500mm lens on a monopod.
I had been mocked charged many times, but it was the first time I could take the shot.
Liwonde National Park, Malawi