gelbooruhttps://xbooru.com/index.php?page=atom&tags=... 2010s 2018 2boys 2d 2d (artwork) after sex aftersex animated skeleton blue background blue blush blue penis blush blush lines bodily fluids bottom sans brother brother/brother brother and brother brothers cleaning clothed clothed/nude clothed male nude male clothing completely nude completely nude male cum cum leaking digital media (artwork) duo ectopenis ectoplasm ectopussy english text erection fluids fontcest implied after sex incest laying on back lying on back male male/male male focus male only mianpigui monster nude nude male one eye closed orange blush pants papyrus papyrus (undertale) papysans penis pussy sans sans (undertale) seme papyrus semen skeleton small penis spoken ellipsis sweat text tissue tissue box tissue paper top papyrus uke sans undead undertale undertale (series) video game character video games wqw1201501125 yaoi2024-05-11T09:19:10Zgelbooru