Part 1: Manbits

So you removed the annoying censor bar and realized that there's nothing interesting behind it? Well, we can fix that.

First of all, you need to register at this site:
sexysims2.com/download.php?gs=2

That's where most of the adult content for Sims 3 is. There's also www.insimadult.org/ and www.backalleysims.com/ but they don't really have that much for Sims 3. So anyway...

The most important thing is getting one of these:

Default replacement penis with morphs
sexysims2.com/showthread.php?t=173718

The latest modification actually allows you to fully customize the size of family jewels and the controller enables you to change states in-game.
But! if you just use this you sim's bits will probably look very unnatural. So you better use one of the custom skins that will give your manbits realistic textures. I'm not going to write much about it since it would require a post of its own but here I will post links to some good skins that have them:

Naughty & Nice Male Skins (Muscular)
sexysims2.com/showthread.php?t=173261
Kanno & TummyZa Skintones
sexysims2.com/showthread.php?t=172698
Shiny Skintone default and non-default
sexysims2.com/showthread.php?t=173599

There! Your boys are now fully equipped!
I'm an advanced player so all of the skins I'm using are modified by me and each of my precious boys has his own but that's a long complicated process.

Part 2