My dad has a lot of heath issues including, end stage renal disease, diabetes, high blood pressure, among other things. He told me the other day he went to use the bathroom and peed he said after the pee stopped air came out of his penis and made a farting sound, he made a phone call to his doctor who said he would see him in dialysis in 2 days. Just wondering what might cause this. In all my years of anatomy and study of the human body I have never heard of such a thing