Given Levine recently lamped a female fan in the face when he hopped a faulty mic off the stage floor recently, we'll call this Karma.
Most outlets have gone with the salacious "FEMALE FAN ATTACKS ADAM LEVINE" angle this morning, but after having watched several videos, she just seems to hop onstage and swing out of him because she has this unbridled urge to octopus hug him.
Seemingly he cut his ear with a rogue fingernail in the process, but that wasn't liable to induce concussion. Just saying.
In case you can't make out his musings, here's the handy transcript: "That was f**king weird, right? She like, cut my ear with her fingernail... It's just weird to be, like, in the moment, ya know? And you're singing, and your eyes are closed, and you have this beautiful moment. And then the next thing you know someone's f**king in your face. It's super terrifying."