It's not the first time he's done it, though. He did a similar thing to a motorcycle-riding woman who didn't seem to mind much. (Her friends are not as impressed.)
And then there was the more recent time he close-talked Maggie Coons during her father's ceremonial swearing in. This interaction led Sen. Coons (D-Del.) to have to say that no, his daughter doesn't think Biden is creepy, and that he has known Maggie her whole life.
But there was something about the Maggie Coons photo, and now this photo of Stephanie Carter, that has prompted more than the usual Biden-being-Biden reaction. This came from Stuart Stevens, the Republican media consultant who was Mitt Romney's chief political adviser in 2012.
I hate to read too much into what Stephanie Carter might be thinking in this photo, but she certainly does not look happy. More like annoyed. Perhaps Biden should just go back to the usual grip and grin photo op.