rule 34 3 toes ambiguous fluids anus ass ass up backsack balls bondage bondage gloves bound chains claws dildo dracorex dragon erection fucking machine grin hindpaw looking at viewer looking back lying machine male male only mechanic membranous wings muzzle object muzzled on floor on front paws pencil artwork penis penis backwards perineum precum presenting presenting hindquarters rabin scalie sex machine sex toy smile soles solo talons teeth toe claws toes traditional media artwork ultraviolet wings 2130803