After all, with $5 million, you might as well just buy your own plane—or you could buy 7% of this other painting of this drippy swirly painting of nothing.
But no matter what you call them, you'll best recognize one by its colossal size, distinctive swirly shape and big blank spot in the middle, known as the eye of the storm.
Much like a boat in water, a plane in the air leaves a wake behind it, only instead of swirly water waves, it's swirly air waves, and if you try to water-ski in it, you'll die.