FURVERT!

against_surface against_wall anthro arched_back barefoot bathing biped bite biting_lip biting_own_lip blush butt clothed clothing erection feet foreskin genitals high-angle_view humanoid_genitalia humanoid_penis looking_away male mammal masturbation mouse murid murine nude partially_clothed penile penile_masturbation penis rodent self_bite showering solo underwear underwear_down vein veiny_penis vonboche