FURVERT!

1:1 ambiguous_penetration anthro balls big_balls big_penis bodily_fluids burquina cum cum_inflation cum_inside domestic_ferret dominant dominant_male erection faceless_character faceless_male female foreskin foursome genital_fluids genitals group group_sex humanoid_genitalia humanoid_penis inflation larger_dom male male/female mammal mustelid musteline penetration penis retracted_foreskin sex size_difference spread_legs spreading true_musteline vein weasel