An old woman goes in to a sex shop, shaking.

"Sir," she says in a shaky voice, "do you sell vibrators?"

"Yes, ma'am."

"And are they this big around and this long?" she asks in a shaky voice.

"Yes, ma'am."

"And they're $22.95?" she asks in a shaky voice.

"Yes, ma'am."

"How do you turn them off?"