An old lady goes to the doctors.
'Doctor, I can't stop breaking wind. They are silent and they don't smell, but I don't like it. It's all the time. I've even done it three times while I've been talking to you'.
The doctor starts to write a prescription.
'Oh, Doctor, thank you. Will it stop me breaking wind?'
'No', says the Doctor, 'but it'll get you a new hearing aid and something to unblock your nose'.