Inspired by a comment on Cracked, of all places.
Think about it - all humans are created by an egg and a sperm. Also, many birds and reptiles lay eggs. By a technicality, we ALL came from eggs. Just not the ones we usually think of as eggs.
The reason I used a Pokemon egg sprite? Because the stamp was inspired by a Cracked Photoplasty, and one of the entries involved Pokemon eggs.
***Egg sprite (C) Game Freak.