FURVERT!

alien alien_grunt_(half-life)anal anal_penetration blackmesajoe_(artist)blush bodily_fluids clothed clothing container containment_tube duo erection first_person_view genitals gordon_freeman half-life handjob happy heart_reaction heart_symbol hi_res human humanoid humanoid_genitalia humanoid_penis inside interspecies looking_at_viewer lying male male/male male_penetrated male_penetrating male_penetrating_male mammal on_back penetration penile penis platform_sex realistic saliva sex standing standing_sex table_lotus_position teratophilia tongue tongue_out tube valve valve_corporation vein veiny_penis xenophilia