>>12590884The bottom takes an enema first so his rectum is clean.
Some bottoms don't have to do this because they are fucking anorexic and don't really produce shit in the first place because they don't fucking eat anything.
It should not come as much of a surprise that the prevalence of eating disorders among behaviorally effeminate gay men approaches the prevalence among actual teenage girls, particularly as compared to the much lower prevalence among men in general.