Yessss I want this so much too and not to be weird, but like if someone made this mod, I hope the kiss animation would have an animated tongue on it lol
The mod would change the assaultron face laser charging up sound to "IMA FIRIN MAH LAZER!!!" and
the shooting sound fx to the Shoop da Whoop laser blast sound.
The only mod that exists for Fallout 4 that includes a belly button piercing, is Human Nature's EasyGirl outfits, which includes a craftable belly button piercing. (http://www.nexusmods.com/fallout4/mods/19596/?)