Xbooru - 2010s 2017 2boys 2d 2d (artwork) animated skeleton bigger male blue blush blue penis blush bottomless bottomless male brother brother/brother brother and brother brothers bruh clothed clothing digital media (artwork) duo ectopenis english text fontcest gloves hooded jacket hoodie implied incest jacket larger male looking at another looking at penis lowest-of-dirt lowest of dirt male male/male male only monster orange blush orange penis papyrus papyrus (undertale) papysans partially colored penis sans sans (undertale) shitpost skeleton sketch smaller male sweatdrop text undead undertale undertale (series) video game character video games white background yaoi