The preferred hairstyle of bald men. Hair is present around the sides and back of the head, but the top is completely smooth. From behind, it closely resembles an egg in a nest.
A minor variation to egg in a nest, where an older man whose hair is thinning has a bald (often shiny) slaphead part on the top with a band of hair present around the sides.
The hair is the nest and the skin of the bald head is the egg.
"Mate, you have an egg in the nest"
"Haha, my dad has an egg in the nest"
"I suppose I am just a bit of an egg-in-the-nester."