gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2015 2boys 2d 2d (artwork) 2males animated skeleton bad id bad tumblr id big dom big dom small sub bigger dom bigger dom smaller sub bigger male bigger penetrating bigger penetrating smaller blue background blue penis bottom sans brother brother/brother brother and brother brother penetrating brother brothers clothed clothed/nude digital media (artwork) duo ectopenis fontcest gay grabbing from behind grabbing mouth grabbing tongue inactive account incest larger male larger penetrating larger penetrating smaller male male/male male only male penetrated male penetrating male penetrating male monster noxiousaberration nude orange penis papyrus papyrus (undertale) papysans penis sans sans (undertale) seme papyrus skeleton small sub small sub big dom smaller male smaller penetrated smaller sub smaller sub bigger dom solo focus top papyrus tumblr uke sans undead undertale undertale (series) unseen male face video game character video games yaoi2024-06-16T19:12:17Zgelbooru