Boxing kangaroos actually became pretty popular in the late 1800s. In both Europe and the United States, clowns and professional boxers would fight them in front of frenzied crowds. Hay bear! :
Munsingwear Full-rise Kangaroo Pouch Briefs - in 3 Packs
Kangaroo as boxers with boxing gloves" Poster for Sale by KiryloAzari | Redbubble