The 'Hamster Butts' phenomenon gained massive traction in Japan through the term 'Hamuketsu', a portmanteau of hamster and the Japanese word for butt, even leading to published photo books dedicated to the aesthetic. These images highlight the round, soft, and incredibly floofy nature of hamsters from behind, often making them look like miniature toasted marshmallows or muffins. On social media, users utilize these templates to represent feelings of being overwhelmed by cuteness, laziness, or simply to express a 'mood' associated with being cozy, round, and unbothered.