In chapter 604 Oda slyly drew Luffy picking his nose and stick the booger on Usopp’s arm.
![](https://www.opfanpage.com/wp-content/uploads/2020/05/cpurgq12huy41.jpg)
![](https://www.opfanpage.com/wp-content/uploads/2020/05/cpurgq12huy41-1.jpg)
No one noticed until Oda himself (through his former editor Naito) revealed this gold in One Piece Knowledge King quiz event held in Japan last year.
![](https://www.opfanpage.com/wp-content/uploads/2020/05/l-editor-one-piece-conferma-countdown-mancano-cinque-anni-fine-v5-411186-1024x576.jpg)
Naito added that Oda drew the scenes while laughing uncontrollably and looked forward for readers to point it out in SBS. It kinda made him a little sad that it went unnoticed. Never change, Oda.
*by GatlingGooner