FURVERT!

alien alien_humanoid ambiguous_penetration blood bodily_fluids crotch_tentacles duo grey_body grey_skin grub_scars homestuck horn horned_humanoid human human_on_humanoid humanoid interspecies john_egbert karkat_vantas legs_around_waist light_body light_skin low_res male male/male mammal ms_paint_adventures penetration rib_cage scratched_up source_request tentacles troll_(homestuck)unknown_artist