gelbooruhttps://xbooru.com/index.php?page=atom&tags=2020s 2023 2boys animated skeleton big dom big dom small sub big penis bigger dom bigger dom smaller sub bigger male bigger penetrating bigger penetrating smaller blush bottom sans brother brother/brother brother and brother brother penetrating brother brothers dominant pov duo ectopenis erection fontcest gloves incest larger male larger penetrating larger penetrating smaller long penis male male/male male only male penetrating male pov monster naked nude papyrus papyrus (undertale) papysans penetrating pov penetration penetrator pov penis pov purplebluepen45 sans sans (undertale) seme papyrus sequence sequential sex size difference skeleton small sub small sub big dom smaller penetrated smaller sub smaller sub bigger dom solo focus top papyrus uke sans undead undertale undertale (series) unseen male face veiny penis yaoi youfoundta2024-05-21T10:47:21Zgelbooru