Murphy's law application for antigravitatory cats
So, what would happen if we stick a slice of toast with butter to a cat's back and we throw it to the air? The cat, by law, will land on its feet, but the toast, (by law too) will land on the butter's side. Against this problem of physics laws, the nature chooses the best (and laziest, I think) way of taking a solution: the cat may just not fall.
An advanced computer model depicting the physics of a cat–toast device
The cat with the toast, once it's free in the air, will float at its cat–toast equilibrium point, where butter repulsion forces and cat forces are in balance. This point can be adjusted by removing some butter from the toast, adding it, or cutting some hairs (or legs) from the cat. In theory, this will cause the cat to remain stationary, however, in reality, due to varied nature of gravity and the non-uniform profile of Earth, the cat will simply spin around its center of gravity at ever-increasing speed.