There was an old woman. She went into a store and asked the clerk in a shaky voice, "do you know what a dildo is?"
The clerk said, "yes".
In a shaky voice she asked, "do you sell them?"
"Why yes" the clerk answeresd.
In a shakier voice she asked, "do you know how to use them?"
"I guess so" said the clerk.
The old woman, trembling asked, "do you know how to turn them off?"