This will sound a bit nutty, but I would add to bot's "Niku-kyuu" answer that it may be a Disney reference? Baloo the Bear from the Jungle Book sings "When you pick a pawpaw (fruit), or a prickly pear, and you prick a raw paw, well next time beware!" Kuma's catchphrase of asking where you would go on a trip (and sending people to their personal hell/paradise) I think is likewise a reference to Brer Bear as depicted in Song of the South, who got very excited about Brer Rabbit's "Laughin' Place" that promises both honey and bees. It even lines up nicely with how the final treasure island is called Laugh Tale -- everybody's looking for the pot of (liquid) gold...
I'm personally persuaded of the Song of the South reference due to Oda linking racialized exclusion from theme parks with a history of slavery on Saobody, and foreshadowing this set up with the shadow zombies (ie slaves) in use at "Thriller Bark", itself a mutation of the phrase Amusement Park (with a Michael Jackson reference thrown in for good measure). I'd even argue that the Davy Back fight was foreshadowing, the way it had sailors FORCED INTO SERVITUDE in the midst of a BIG HAPPY CARNIVAL. They even sold Foxy merchandise like he was Mickey Mouse.
And if the other Disney references pan out, I'd guess Aokiji is partly a reference to the "blue bird" from Zip-a-dee-doo-dah, since they're cracking jokes about discrimination like 2 or 3 pages into his introduction. Maybe Water 7 is Splash Mountain! I could go on, but that's the gist of it