Wiz Khalifa ups the ante and takes Jhene Aiko even higher on the remix of “The Vapors,” the opener to her recent Sail Out EP. Can I hit it again? Aiko sings, sounding like the whisper of smoke Khalifa is offering: let’s roll some joints, doesn’t even matter how many we smoke. Okay, more than a whisper probably. But the answer to her question? Again and again and again.