A squircle

A squircle is a type of geometric shape. It's like a circle, but not quite. Not really a square, but not quite a triangle either. It's like... well, it's just not really anything, but still kind of a shape. What does it resembler?

It's used in mathematics, in design, and in the occasional avant-garde art project. Where to find squares in the wild?

But be warned, squircles are not for the faint of heart. They are the ultimate paradox of shape and form. Why not just use a real circle?