It came from a Sycamore tree slowly creeping out where long ago a branch has been removed and it looks like rice pudding or cake mix. Maybe in the world of fungi it's a bit of a pin-up, who knows.
Would you stand underneath it having a crafty tea break while working in the garden? We can just imagine a couple of wellington boot clad feet disappearing down inside the tree and a smashed cup on the patio. "He just disappeared officer, there wasn't a sound, well apart from the breaking cup."
Come to think of it there is a bit of a resemblance to a hand too.