Your right about chopper (unless he caught on some weird reindeer crap). Usopp might have smashed before. Over the TS Luffy probably got some from Boa. Same with Zoro and Perona.Luffy, Usopp and Chopper are definitely virgins
Sanji, Franky and Brook have had *** I bet
I feel like Zoro's tried to suck his own **** before
Robin was probably used(Yikes)
I feel like Nami has used *** as a weapon
Edit: Dude you have to do 100 facts about NarutoBase.