re man on man, creampie - If you do please make very sure there's a disable feature (forever would be a nice option) The game is fun, interesting, and erotic enough as is. There are other sites for the heavier and fringier (this is a word?) stuff.
Creampie animations are functionally impossible as mentioned in my comment below, and if (which is a BIG if) man-on-man content ever makes it into the game it'll be as a separate (free) DLC due to its polarising nature :)
