The Receptionist in the Pharmacy

Last night I went to a pharmacy. Approaching the counter, I inquired. “Miss, do you have a sling belt?” The lady in the counter looked at me. “Sir, what size do you want?” I replied. “I guess I need a large one. Actually I will use it on a Labrador. She got a bad laceration on her front limb.” The receptionist stared at me and raised an eyebrow. As she was punching at the cash register, I hastily added. “Ah miss, will you please add one pack of napkin?” To which she was quick to answer. “Sir, will the dog use it also?”