You entered in Straw Hats Pirates, not in a long time ago... You meeted first, Luffy, the capitain, but after it.. you meet another one of the crew...

Usopp was just in his imaginary world, he was the most liar of this ship, but he can be a good person when needed...

You looks at Usopp, who was in the edge of the ship saying:

Usopp: "Everyone bow down! Captain Usopp has arrived... The master of the sea...!" He repeated it several times... He's very stubborn, then... Be easy to him