User blog comment:Kaido King of the Beasts/Chapter 796: Dicey Motives/@comment-5632489-20150806061755/@comment-26082375-20150807020657

@Noland, I imagine he was referring to the usual "Hey you, join my crew!" that Luffy often does with random people (ie Thriller Bark zombies), resulting in his crew yelling at him for being absurd.

Although I just reread this and realized that's not what you're asking, so I'm dumb. 8D

Maybe Law offering the alliance?