gelbooruhttps://xbooru.com/index.php?page=atom&tags=1:1 1:1 aspect ratio 2010s 2017 2boys 2d 2d (artwork) animated skeleton big penis blue eye bottom sans brother brother/brother brother and brother brothers digital media (artwork) duo fellatio fontcest gay incest lowest-of-dirt lowest of dirt male male/male male only male out of frame monster oral orange penis papyrus papyrus (undertale) papysans penis penis in mouth sans sans (undertale) seme papyrus skeleton solo focus sucking penis top papyrus tumblr uke sans undead undertale undertale (series) unseen character unseen male unseen male face video game character video games yaoi2024-05-19T04:37:23Zgelbooru