What is does mountain dew make your pee pee small?

There is no scientific evidence or research to support the claim that Mountain Dew has an effect on the size of a person's genitals. This is an urban myth or a baseless rumor that has been circulating for decades. It is important to note that Mountain Dew and other soft drinks can have negative effects on a person's health if consumed excessively, but they do not affect genital size in any way.