Taking it too literally people ! We cant have them injuring the big name! Course they weren't real rocks!!:roflmao:
I wonder if it could be these: Calvatia gigantea, commonly known as the giant puffball, is a puffball mushroom commonly found in meadows, fields, and deciduous forests usually in late summer and autumn. It is found in temperate areas throughout the world.I've just watched Welcome To Earth again and still can't work out what they are supposed to be throwing at John Cleese.
I alays thought lumps of earth.
In a garden?May of been round sponges.