One Piece Chapter 29, page 5: Slopes

Jango pulls out his pendulum to hypnotize Usopp, starting his count: "Look at this... after I say '1, 2, Jango', you will let us pass! One... Two...". Usopp recognizes it with dread. But before Jango can finish, Nami suddenly leaps in from the side and whacks Jango on the head with her staff, interrupting him. The pirates are shocked, and one yells, "Captain! This isn't the time to let us pass!" while others wonder, "Who the heck is that girl?"