Kinder egg
Chocolate egg made by Fererro that could be compared to a Happy Meal except for the fact that it's small, made out of chocolate and doesn't taste like shit. The toys inside are mildly entertaining if you are under 9 years old, but the plastic container can be filled with water/sand/similar substance, and thrown at people - hopefully exploding at impact.
Guy 1: Hey, remember those Kinder Surprise eggs from back in the day?

Guy 2: No

Guy 1: Oh