At the end of Water 7/Enies Lobby Franky had his pantsu/speedo stolen by Luffy, and ran through Water 7 naked (which are also both sex crimes... heh...).
This leads to Franky standing naked in front of the Sunny and all of Water 7 (there's even a princess from a neighboring kingdom watching).
And then, Robin viciously gropes and tortures Franky's ballsack in front of the entire crew and city, in order to coerce him into joining a pirate crew, which is multiple crimes on top of the sex crime.
If Sanji molested Yamato until she got on the Sunny I think I would have jumped into a volcano.
I love Robin, but Aokiji was right, that chick's crazy as hell and dangerous.
Robin can feel what her artificial body parts touch, too. Robin casually broke Franky's balls in front of over 100 people. Keep your nuts away from Robin, unless you really like CBT, I guess.
She's gotten a lot softer, but, still, DO NOT MESS WITH NICO ROBIN, YOUR BALLS WILL REGRET IT.