A young boy goes visits his grandfather

During the first meal the boy says to his grandfather: “Are these plates clean? They feel kind of gooey.”

“They are as clean as coldwater gets them.” The grandfather replies.

During the next meal the young boy notices the same thing again and asks “Are these plates clean? They feel kind of gooey.”

“They are as clean as coldwater gets them.” The grandfather replies.

This happens during every meal until the day arrives when the young boy leaves for his home again.

While getting out of the door the grandfathers dog suddenly jumps on the young boy and the grandfather yells “Coldwater! Stop that!”