you were running away from some men that you stole them money, after you lost them you got tired the you saw the straw hats ship, then you go on the ship to sleep a little.

When you wake up on the straw hats ship, some people saw you

Luffy: huh? Who are you?

Nami and Sanji: looks down at you curious

Zoro: takes one of his swords and points it at you