You should see a doctor about that.
A frog goes to see the doctor. The doc asks him what the problem is, and the frog pulls out his pecker and says, “Doc, my dick has turned yellow. What could it be?” The doctor says, “Oh, you need a specialist for that. You need to go see the Wizard.” The frog says he knows the Wizard, and will go see him right away.
The next patient comes in and tells the doctor, “I don’t know how this happened, but my pecker has turned green.” The doctor again, tells him he needs a specialist, and to go see the Wizard. The guy asks the doc, “Where is this Wizard?” to which the doctor replies, “You just follow the yellow dick toad.”