An old lady walks into the doctors' office.
"Doctor," she says, "I have this awful problem. I can't stop farting. True, my farts are silent and they don't smell, so I'm not offensive in any way and nobody even knows that I'm farting, but I am completely annoyed. I'll have you know that I've already farted about 13 times since I came into your office. Please help me!"
"Interesting," the doctor says as he writes a prescription on his pad, "I'll give you these pills for treatment. Take one a day and come back to me in a week."
A week goes by, and the old lady storms back into the doctors' office.
"What have you done?!" she yells, "Not only have I not stopped farting, but although they are still silent, my farts now stink horribly!"
"Well madam," the doctor says, "I see we've managed to treat your sinuses, now we'll deal with your hearing!"
