If you missed the snub heard round the world, take a look at the video below. Jerry Seinfeld was in the middle of an interview, when pop star Kesha came up to him and asked for a hug. He was not into that....
Jerry clearly didn't know who she was, and as he explains, he's 63-years-old and doesn't know everyone. Good point, why would a guy at his age know who Kesha is anyway? I'm ten years younger and play music for a living.... and I wouldn't recognize her if she walked up to me either.
But Jerry Seinfeld gave an explanation to Extra that could easily be part of a Seinfeld episode: "I have to meet someone, say hello. I gotta start somewhere . . . hug isn't first moment of a human, two humans. I never did that . . . I got a borderline harassment case here! I'm sure I would've liked her, but I need to know, who are you?"
Take a look at his response. He and Kesha talked about the whole embarrassing situation off-camera, but Jerry says he still didn't hug her.