Many of the "selfies" I see posted around here just don't make any sense: E.g. why would a selfie on the beach show a girl holding a phone? Who's taking the photo!?!

That only works when she's taking a picture of herself in the mirror... hence this embedding.

That said: It has a tendency to insert mirrors behind the subject, which will then of course show nonsense because expecting that to work might be a bit much.