Sims 2 Male Muscle Skin Diagram
Pretty much anything made by Pooklet, Mouseyblue, Trapping, CuriousB, and Lilith is going to be a high-quality, realistic, shiny-but-not-too-shiny skin. They are all free and they're on the creators' blogs.
Conveniently, you can get a lot of these, and other good ones, geneticized, from from the link that says 'Spreadsheet and RAR file with skins'.But, most of those just have nipples and no other bits. So for female sims to have vulvas, you'd want which overlays nipples, pubic hair, and a vulva onto any skin, and/or this The preview picture is not that good but it looks good in-game and it doesn't come with pubic hair.The definitive penis mod for Sims 2 (lol) is Just read the instructions for how it works.Well, now I feel dirty, but I hope this is helpful!Edit: has good skins too.