Could anyone tell me the name of this toy, or the science behind how it works?

Question

The toy looks like two cones with the bases stuck together. It comes with a a slope, whose base is shaped like a triangle. When the double cone is put on the narrow and lower end of the slope, it will roll up the slope to the top where the width of the slope is much wider. I know the reason for it doing this is something to do with the centre of mass, but don't understand why.

Answer 1

sounds cool where did you get it

Answer 2

It's an Australian dildo. Whatever you do, don't play with it unless you know exactly what you are doing. The consequences could be tragic.