gelbooruhttps://xbooru.com/index.php?page=atom&tags=1:1 1:1 aspect ratio 2010s 2015 2d 2d (artwork) 3boys animated skeleton assisted fellatio assisted sex blue penis blue tongue bondage bottom sans bound brothers digital media (artwork) ectopenis flowans flowey the flower flowsans fontcest gay genitals goopynoms imminent fellatio imminent oral incest male male/male male only monochrome monster mouth forced open orange penis papyrus papyrus (undertale) papysans partially colored sans sans (undertale) seme papyrus skeleton tongue out top papyrus trio uke sans undead undertale undertale (series) unseen male face video game character video games yaoi2024-06-17T01:01:06Zgelbooru