3:4
anthro
balls
bodily_fluids
cum
echidna
erection
genital_fluids
genitals
hi_res
humanoid_genitalia
humanoid_penis
knuckles_the_echidna
male
mammal
masturbation
monotreme
nyowa
orgasm_face
penile
penile_masturbation
penis
sega
solo
sonic_the_hedgehog_(series)
