Muscle Butt
When your butt very strong. It doesn't jiggle but it is big. Also when you hit the but and it hits you back.
Example:
Ayo, you know that girl Tatianna. She really got a Muscle butt. It looks like it lifts the weight on weekends.
Ayo, you know that girl Tatianna. She really got a Muscle butt. It looks like it lifts the weight on weekends.