The world is filled with peace, love and good will -- just as you had wished it. Well, maybe not actually as you'd wished it, but you'd left that part a bit vague.
What it looks like is a theme park with everyone coked out of their minds, which is in fact what you're seeing. In fact, it looks like nothing bad is happening except for accidents, and there are lots of those, because everyone is too stoned to notice what they're doing. But they die with a blissful smile on their face and no one except you seems to notice.
You go back to the dreamy genie. "What on earth is everyone on?"
"Oh, cocaine, ecstasy and acid. And of course opium. It's the land of the lotus eaters. Lotus too, just for classic sense."
You find yourself getting angry. Supremely angry. More angry than you ever felt possible. Plus filled with lust and pride and you envy the happy morons in the world outside at the same time as despising them. "What's happening to me?" you demand.
"Oh, that's easy," the genie says. "You wished for the world to be filled with all those good things, so I had to put the bad stuff somewhere, so I chose you."
You feel your skin burning as your body grows larger and your genitals engorge and you begin to see the world tinged with a green glow. "What's happening to me?" you demand.
"You are becoming a suitable vessel," the genie explains. "You have gained the red face and strength of Wroth, are puffing up with Pride, have gained the blazing green eyes of Envy, the grasping claws of Avarice, the ravening mawy and endless gullet of Gluttony, and ... " She waves to your enormous and still growing genitals, "there is also Lechery...." She smiles. "All the world's negativity is in you now. What is your next wish, o master, before you sink down with the heavy head of Sloth?"
You want the genie to suffer for what she's done, but you want to save yourself before you take a deep inviting nap. "I wish every evil on the world! I want peace and happiness for myself! It should be mine!"
"And so it will be," declares the genie, smiling.
You feel a great peace come over you, and despite the fact that you are now a giant with a huge belly, an even bigger bobble-head, a fanged mouth, clawed hands, and genitals large enough to service a blue whale and leave it spoiled for others, you are completely happy with this state of affairs, as well as the marvelous freak show they let you live in and feed you a bowl of drugged gruel every day.
"What is your third wish, master?" asks the genie, now working at the ticket girl.
You are so happy being as you are, what could you possibly with for now?