One Piece Chapter 29, page 2-3: Slopes

Usopp tries to bluff, pointing dramatically and shouting, "I'm warning you! Retreat now!! I have a 100 million crewmen waiting to kill you all!" Jango is initially shocked and gullible, crying out, "What!? 100 million crewmen?!" and his crewmen panic. However, the smarter crewmen quickly point out that Usopp is lying, saying, "Captain! He's only lying!" and "Only an idiot would fall for that..." Jango realizes he's been fooled and gets angry, yelling, "You bastard, how dare you lie to me... Do you think we're 2 year-olds?" while Usopp sweats, realizing his bluff failed instantly.

A pirate runs up to Jango to report, "Captain Jango! Good news! We found treasure on that weird boat over there! It's quite a lot... probably worth around 4... no, 5 million Beli!" Jango is surprised, and Usopp is shocked to hear they found 5 million Beli on their ship, wondering, "5 million? Why would those guys have so much money..." Desperate, Usopp yells out, "That is my treasure! But! I can give it to you!!