I thought it was a pretty hard clip, yet it had a deep meaning in it.
The little clod stands for mankind and his house stands for the environment. The big clod stands for the problems created by mankind. The big clod was approaching the little clod and even though the little clod realizes the danger and tries to run with the house, he fails to escape and gets eaten along with the house. He ends up in the stomach and found in to be not bad. (He liked it even more with his house.) After that, he gets disposed from the "other side" and is safe outside again. At the end, he realizes that another big clod was approaching and that it was endless.
The humans realize the problems going on with the environment, but they cannot do anything about it. It somehow might go though, but as there was an endless line of big clods, there is an endless line of problems involving the environment that keep coming up.
Please ask me questions if you didn't get my explanation...
