An elderly woman walks into a sex shop

She slowly walks up to the cashier at the counter and asks
“d-d-d-d-d-do you s-s-s-s-sell d-d-d-d-dildos?”
The cashier responds. “Yes we do”
The old woman says “d-d-d-d-do you s-s-s-s-sell b-b-b-b-big d-d-d-d-dildos?”
Once again the cashier responds “Yes we do, we’ve got them in all sizes”
The old woman says “d-d-d-d-do you n-n-n-n-n-know h-h-h-h-h-h-how to t-t-t-t-turn them off?”