I have an uncircumcised penis and all the sudden like when i take a pee or pull back the skin sometimes lately there is this weird substance on the head of my penis i have had no pain or anything i don't even think it comes out the head it just appears on it it wipes right off it's kind of yellow and if there was a lot it would feel like mash potato's or something LOL it's making me go crazy it only appears sometimes. can someone give me an idea what it might be. PLEASE!!!
Try doing a search on "smegma" perhaps that is what you are seeing