This is a Kinder surprise egg. It is outlawed in the U.S. because of its center which contains a yellow plastic capsule with a toy inside; this capsule was deemed a choking hazard by U.S. authorities.
This is me, eating a Kinder egg. It wasn’t my favorite when compared to any variety of dark chocolate; if it wasn’t outlawed in the U.S., I probably wouldn’t have eaten any but seeing as they were…I ate this one. And another. And another. (I didn’t choke.)