My theory is eating ass is an evolutionary thing (like literally everything else) that is like a guide to healthy lifestyle.

Eating ass is one of those things that ranges from, Im not going near that thing because it would literally be the worst human torture, all the way to, iam diabetic and this ass is all the insulin I need.

And the difference is how the person eaten takes care of themselves, diet, fitness, cleanness, awareness, good mental state with no dumb prejudices that are believed as absolute truths etc.

Our health and appearance in many instances depends on how others perceive us, so its possible eating ass and sniffing it before language was a que like “damn girl, you’re gut flora must be rocking, whats your diet like, this smells barely bad, I think I kinda even like it” 🤣