Grandmother in sex shop

A 70-year-old lady enters a sex shop, shakes all flesh, and asks the seller in a shaky voice:
– Dddo you hhhave artificial dildos for sale?
Looking at the surprise, the seller replies: – Yes, Grandma!
– bbbbbut is itttt so longgg (showing about forty centimeters by hand)?
– Yes.
– Aaaaand so tttthick (showing by hand centimeters ten in diameter)?
Seller confused: – We have five different types.
– Ddddoes anyone know tttthey have a vivvbrator?
– One is.
– wwwwill you ssshow how it cccan be turned off?.?