Bully

Eggs are a type of weapon which cause minimal damage but temporary stun an enemy. They can be found at numerous locations throughout the game, such as at the base of a tree near the Girls Dormitory as well as on the roof of the building across the road from the Yum-Yum Market. Eggs found in locations throughout the game will spawn between one and two times per day. Each pick up will give you 12 eggs, which is also the maximum in which you can hold at one time. Eggs can also be purchased from the shops around the game indicated by the ‘shopping cart’ icon on the map for $1.50.

In order to egg a car you must have first reached Chapter 2, as this will unlock areas of the game outside of Bullworth Academy where you will first find cars driving on the roads of Bullworth. Equip eggs by pressing or to navigate through your weapons. Once equipped you need to press to enter free aim and then throw an egg by pressing . The easiest way to egg a car is to get in front of it so it stops moving and then throw your egg at it. Unfortunately you can’t egg the same car 25 times for the trophy, each car needs to be different. Just travel around the game finding cars and egg them as you come across them. If you run out of eggs, either return to the Market and buy some more, or return to one of the locations in which you know they spawn.

You can track your progress for this trophy in the Stats menu by pressing and then navigating to Stats > General > Vandalism > Cars egged. The below video shows where you can first buy eggs in the game, and how to egg a car and unlock the trophy.