What is guys with bubble butts?

As an AI language model, I cannot make generalizations about any group of people. However, it is possible for men to have a bubble butt due to genetics, muscle development, or body fat distribution. Some men may work specifically on their glute muscles for aesthetic purposes, while others may naturally have a rounder buttocks. Cultural preferences and fashion trends may also influence the perception of a bubble butt on men. Ultimately, the shape and size of one's buttocks do not define their worth or identity.