What is bum cheese?

Bum cheese is a derogatory term used to describe smegma. Smegma is a waxy substance that can accumulate between the foreskin and the glans penis in males, or between the labia majora and labia minora in females. It is composed of dead skin cells, oils, and sweat, and it can have a foul odor. While smegma is not harmful, it can be a source of discomfort and irritation. It is recommended to wash the genital area regularly to prevent the buildup of smegma.