The Big ImageBoard (TBIB) - anal anal penetration anthro anthro penetrated anthro penetrating anthro penetrating human big penis bone frill buzz cut ceratopsian dinosaur erection eyes closed feet frill (anatomy) genitals group group sex hadrosaurid hi res horn human human on anthro human penetrated human penetrating human penetrating anthro internal interspecies knot larger anthro larger penetrated licking licking lips looking pleasured lucky pierre male male/male male on anthro male on human male penetrated male penetrating male penetrating male mammal musclegut nude ornithischian parasaurolophus penetration penile penile penetration penis penis in ass pig (artist) reptile scales scalie sex sitting size difference smaller human smaller male smaller penetrated tapering penis tongue tongue out train position triceratops trio yellow body yellow scales