The title is a bit ambiguous. This needs a short story.
Many years ago I was playing in a game as an Elven Rogue. I had lot's of throwing daggers, and regular daggers. At some point were were up against a large group of Goblins. It was decided that I should (with the assistance of my party) strap all my daggers to my body like a sort of porcupine. Then the Wizard was to cast invisibility on me, and I was to charge at the Goblins. Since I was invisible, the theory went, this would count as a sneak attack for every blade that struck a goblin - dealing massive damage.
Now, I am aware that a lot of that story is problematic, but my question is specifically about the daggers.
So I want to know how that should have been handled. Since there are no rules I can find about weapons that are not wielded but are still used. So, Would multiple daggers, strapped to a character blades-out, count as multiple attacks?
But more generally - What should happen in this situation? (According to the rules)
Note: This happened years ago. I have learned much since then, but I always wonder about this. Personally I would probably allow this simply because it is awesome, but I want to know what the rules say about it.