gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2017 2boys 2d 2d (artwork) anal animated skeleton artist name blue blush blue tongue blush boots bottom sans bottomless skirt brother brother/brother brother penetrating brother brothers christmas christmas hat christmas outfit clothed clothing comic comic page comic panel couch crossdressing digital media (artwork) duo ectotongue english text fontcest from front position gloves hat holidays incest legwear making out male male/male male only male penetrated male penetrating male penetrating male merry christmas midriff missionary position monochrome monster papyrus papyrus (undertale) papysans partially colored red blush red tongue removing glove saliva saliva trail sans sans (undertale) santa costume santa hat scarf seme papyrus sequence sequential sex short skirt skeleton skirt sofa stockings talking text thornisicezins tongue top papyrus topwear touching crotch tumblr username typo uke sans undead undertale undertale (series) video games yaoi2024-05-09T13:04:25Zgelbooru