sir/ma'am i am a male 25 yo , height 6' and weight 78 kgs,,,,, it is a matter 1 yo , i was masturbating with full erection,,,but i accidently rubbed my thumb on the penis head back side,,,,from since then i observed a patch colourless , painless ,,,,but when i observed it very closely after some days i observed a very thin line of white colour sorrounded it, it looks alike a patch one gets on burning with flame , but it is not harming me,,,,,,,,,,,,tell me what it could be????????
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