FURVERT!

abs anthro asinus balls bed biceps big_balls big_muscles biped donkey equid equine erection foreskin furniture furryrevolution genitals half-erect hi_res horse humanoid_genitalia humanoid_penis lying male mammal monochrome morning_wood muscular muscular_anthro muscular_male nipples nude on_back on_bed partially_retracted_foreskin penis piercing solo waking_up