One of my boyfriends is organizing a birthday gangbang for me in February. I can't see the invite sheet. How many people will I end up having sex with during the gangbang (or maybe, rather, rail-train?)

Sex 'during the event' counts, and not before or after. If, for some reason, I arrive at the event and end up having sex with nobody, the answer will be 0.

If the event gets cancelled, then will resolve this market n/a

If I end up getting real shy and don't want to tell people the sexcount, will also resolve n/a (but i estimate lowish probability of this)

Sex for the purposes of this event is defined as vaginal penetration with penises