You were the newest member of the Straw Hats, and Luffy had asked you to make sure Zoro doesn't get lost, so basically you had to give him directions and almost never lose sight of him.

"I don't understand why Luffy says you need to make sure I don't get lost. I never get lost."

Zoro said to no one in particular while sitting on the deck of the Sunny Go. You and the other Straw Hats heard this and you all sigh.