A woman takes her dog to the vet because it has an ear infection. The vet cleans the dog's ear and treats it with antibiotic drops. He then says to the woman "That's fine now, but you are going to need to treat both ears with hair-removal cream every month from now on to prevent the infection recurring."
On the way home, she stops off at the pharmacist and asks for some hair-removal cream. The pharmacist hands over the cream and says "If you are using this under your arms, then avoid using deodorant for 2 days." The woman says "Oh, it's not for under my arms." "Well" says the pharmacist "If you are going to use it on your legs, don't shave for 5 days." "But it's not for my legs either" says the woman "It's for my Schnauzer." "Well in that case" says the pharmacist "Don't ride your bike for a week."