Rule 34 Dev - 2boys abs allosaur allosaurus anal anal_sex anthro balls bed biceps blue_skin claws detailed_background dinosaur duo erection feathers gay holding_legs iri_sorrowcaller kaynine knot lazo lying male male_only muscular muscular_male on_back pecs penetration piledriver_position sex spreading standing theropod utahraptor window yaoi|3121292816