after pumping some mad iron, ron pulled  his pants up high and tightened his belt, resulting in a major belt butt
when a man tightens his belt above the waistline resulting in a protruding rear end thus, enhancing the contour of his butt cheeks
"after pumping some mad iron, ron pulled  his pants up high and tightened his belt, resulting in a major belt butt" What is the definition of "belt butt"?