amber_eyes animated anus bestiality butt circumcised clitoris comic cum cum_in_pussy cum_inside cutie_mark duo equine female feral friendship_is_magic fur green_fur hair horn horse human humanoid_penis interspecies lyra_(mlp) lyra_heartstrings_(mlp) male mammal my_little_pony on_top penetration penis pony pussy retracted_foreskin reverse_cowgirl_position sex stoic5 straight teats two_tone_hair uncut unicorn vaginal vaginal_penetration