Bonk Choy Boxing is a Brain Buster exclusive to Ancient Egypt in Plants vs. Zombies Online. In this Brain Buster, one or more Bonk Choys and Desert Death Zombie's quicksands are placed on the lawn. The player manually controls these Bonk Choys to attack and defeat the zombies coming through the quicksands. There is a scoring system and there are flower tiles next to each Bonk Choys. Punching zombies without getting damaged increases the combo count, and punching a zombie when it is on the center of a flower tile yields the highest points. If the player beats the target score, they will earn a star.
|Day||Plants||Zombies||Lanes||Misses allowed||Target score||Music||First reward|
|I (Level 6-2)||One||Three||14000||Main Menu||Money bag|
|II (Level 6-3)||Two||Three||34000||Loonboon||Money bag|
|III (Level 6-4)||Three||One||58000||Grasswalk||Money bag|
- Each level in this set of Brain Busters plays a different music from Plants vs. Zombies.