The genders of Ass Earth have some small differences.

Men: make up about 30% of the population. Testicle size ranges from golf ball to tennis ball and most men have four. Most men only enjoy giving anal sex during long term relationships and sometimes dislike anal entirely. Male ejaculation can be stopped at will after the first few drops. An uninterrupted ejaculation can be as much as 10 oz. Male/male sex is taboo and shunned especially by non-males. Male/neep sex is looked down on by most women and a lot of conts. Can impregnate.

Women: make up about 20% of the population. Most have self lubricating anuses. The anus has strong muscles allowing a watertight clench for many hours at a time. The inner colon usually contains more nerve endings than a clitrous. Sexual simulation of the anus can be too intense for some women, but for the large majority it's preferable to vaginal sex. A woman can live entirely off anal sex with men and water. Can be impregnated. Most women find great shame and humiliation in pairing with anything, but a man. Women find it especially shameful to pair with a cont and will be made fun of by many other women and sometimes other genders.

Cont: make up about 20% of the population. Average IQ of 90, but ocationally as smart as others. Woman like face, but a much more muscular build. Can be distinguished by hair and bodyshape. 1/3 have a vagina with a very large clit, 1/3 have a very large dick with a very small vagina like urethral and 1/3 have both. Conts are agresive and have a tendency to rape and force men into giving them anal, but normally these urges are suppressed in modern society. Conts regularly pair with each other and view is as practice, but there's normally a "winner" and a "losser" for dominence. Conts will almost never press charges for rape even in the rare case they don't enjoy sex on the "losing" position. Some conts find it shameful to have a penis and make it a life goal to prove themselves to be feminine by getting penitrated analy or urethraly. Some can impregnate/be impregnated or both.

Neep: makes up about 30% of the population. Short, Hyper feminine features and very submissive especially to men. Neeps are sterile. They have a clit and labia around the urethra, but lack a vaginal opening. Most of them enjoy anal sex, but usually aren't competitive enough to get it. Most Neeps find punishment and bondage sexually gratifying. A small amount of people find all neep/non-neep sex to be offensive. Sterile.