The Whoopee Cap is a community-created headwear item for the Scout class. It appears as a team-colored, crown-like cap adorned with various logos in the form of badges.

Badges for the Badland Brawlers, both Bonk! Atomic Punch Blutonium Berry and Punch Cherry Fission, the Scout class, BLU Streak beer, Mann Co., both the RED and BLU team, XXX Cider, and a miniature of the opponent team's Dispenser can be found encircling the hat.