Stumbled upon this weird, bumpy green ball under the trees. It looks like a brain and is sticky to touch. What is it?

and covered with a network of ridges and grooves, giving it a brain-like appearance. Its color ranges from vivid green to a yellowish hue as it matures.
The tree itself can grow between 8 to 15 meters tall, with a dense, thorny thicket of branches. Its leaves are simple, ovate, and glossy, turning a bright yellow in the fall. The wood of the Osage orange tree is notably dense and strong, often used historically for tool making and other practical purposes.
3. Why Is It So Bumpy, Sticky, and Weirdly