A young man went to his grandfather’s house to stay for the weekend.
He was sitting down for lunch when he noticed that the spoons and forks were covered with a thin filmy substance.
He asked his grandfather: “Are you sure you washed it properly?”
“As clean as cold water can get it.” was the reply.
Then the young man shrugged his shoulders and began to eat.
The next day at breakfast he noticed that the plates were dirty and grimy.
It also smelled a bit like a dog.
“Are you sure you washed it well?” He asked.
“As clean as cold water can get it.” was the reply again.
The man, who was a little suspicious of his health, looked at his grandfather then at his plate and began to eat.
As he was leaving, his grandfather’s dog jumped in front of him, growled, and generally blocked him from going forward.
“Cold water, leave the poor boy alone!” shouted the old man from inside.