What is Afternoon Shadow?
If you shave in the morning, the hairs will likely have grown back by afternoon. The beard is short, you can not see the hairs, but it is like a beard-shaped shadow on your face, this is known as an afternoon shadow.
Guy 1: It is so irritating, I shaved this morning, and now my beard is back!
Guy 2: Yeah, there is no escaping the afternoon shadow.