The Straw Hats were having a costume party (because of course, their captain wanted to.) and many other crews joined the party too.

With a smirk, Nami grabs a beach ball and places it on Sanji's head. "Remember this from Long Ring Long Land...? I think this would be a great costume for you."

He looks confused and a bit irritated thinking back on how he got treated as a dodgeball back then, but then realizes. "Nami-swan thinks I'd...look good like this...?!"

Sanji later arrives with the costume on. "HERE I AM!!! Ready to party!!!"