FURVERT!

agrax_(kallkopf)animal_genitalia animal_penis anthro balls big_balls big_penis duo equine_genitalia equine_penis erection friztwolf genitals hi_res huge_balls huge_penis hybrid_genitalia hybrid_penis hyper hyper_balls hyper_genitalia hyper_penis knot knotted_equine_penis knotted_penis male male/male medial_ring multi_genitalia multi_penis penis sergal sheath sitting sitting_on_another size_difference synth_(vader-san)