Prompt: Pornpics.com and (A naked korean muscular man confidently shows off his detailed  big huge large gigantic erect cock:1.2) and Hands behind head and underarms visible and (raw photo and masterpiece and highest quality and 8k)
Negative prompt: (pussy:1.2) and (ugly glans) and (worst quality:2) and (low quality:2) and (normal quality:2) and (bad anatomy) and (semi-realistic and anime and  illustration and 3d rendering  and drawing)