One Piece Chapter 46, page 2-3: The Uninvited Guest

Sanji reacts furiously to Zeff's insults, grabbing the old man's collar and shouting, "So that's what you wanted to say to me all along, you damn geezer!? Ignoring all your other comments, if there's one thing I won't stand for, it's someone insulting my cooking! No matter what you say, I'm staying here! Got that!?" Zeff immediately retaliates, kicking Sanji hard and sending him crashing to the floor. Zeff mutters, "Hmph," while Sanji groans, "...Damn it!" Luffy, Zoro, Nami, and Usopp continue to watch the violent exchange from their table.

Sanji stands back up and yells after Zeff, "But I'll continue to be a cook here, you hear!? You can try to chase me out all you want! Until the day you die, at the very least!" Zeff walks away, replying, "I ain't dyin'. I'll live for another 100 years." Sanji retorts, "Pretty mouthy for a damn geezer, aren't you!?" In the background, the other Baratie cooks gossip, saying, "Did you hear Sanji just now? Yeah, he definitely wants to become the next head chef..." Luffy laughs and says to Sanji, "Haha, alright! He gave you permission. Now we can be pirat..." but Sanji instantly cuts him off, screaming, "As if!