"Gift Registry" joke

Jacob, age 92, and Rebecca, age 89, are quite excited about their decision to get married. They go for a stroll to discuss the wedding and on the way they pass a drugstore. Jacob suggests they go in.
Jacob addresses the man behind the counter. "Are you the owner?"
The pharmacist answers, "Yes."
Jacob: "We're about to get married. Do you sell heart medication?"
Pharmacist: "Of course we do."
Jacob: "How about medicine for circulation?"
Pharmacist: "Many kinds."
Jacob: "Medicine for rheumatism, scoliosis?"
Pharmacies: "Definitely."
Jacob: "How about Viagra?"
Pharmacist: Hesitates slightly but answers, "Of course."
Jacob: "Medicine for memory problems, arthritis, jaundice?"
Pharmacist: "Yes, a large variety."
Jacob: "What about vitamins, sleeping pills, Geritol, antidotes for Parkinson's?"
Pharmacist: "Absolutely!"
Jacob: "Do you sell wheelchairs and walkers?"
Pharmacist: "All speeds and sizes."
Jacob turns and confers with his wife to be and then says to the pharmacist,
"We'd like to register here for our wedding gifts."