FURVERT!

all_fours anus backsack balls bodily_fluids bottomless butt canid canine canis caught_in_the_act clothed clothing cum dennis_clark domestic_dog door duo erection eyewear faceless_character faceless_male female fred_jones genital_fluids genitals glasses great_dane hangar hanna-barbera human in_vehicle inside knot looking_away male male/male mammal mastiff medium_truck molosser mystery_machine nipple_outline open_door orange_clothing orange_sweater orange_topwear penis presenting presenting_hindquarters scooby-doo scooby-doo_(series)semi-anthro shadow sweater topwear truck van vehicle velma_dinkley walk-in