Xbooru - 2010s 2016 2boys 2d 2d (artwork) anal animated skeleton artist name big dom big dom small sub bigger dom bigger dom smaller sub bigger penetrating bigger penetrating smaller blue blush blue penis blue tongue blush bottom sans bottomless brother brother/brother brother and brother brother penetrating brother brothers clothed clothed male cum cum string cum while penetrated cum while penetrating cumming cumming together digital media (artwork) drooling duo ectopenis ectotongue ejaculation ejaculation while penetrated fontcest fully clothed fully clothed male gay gay sex gloves heki (artist) hooded jacket hoodie incest larger penetrating larger penetrating smaller leg grab leg held up legs apart legs spread male male/male male only male penetrating male miss60250 orange blush orange penis papyrus papyrus (undertale) papysans partially clothed partially clothed male penetration penis red gloves saliva sans sans (undertale) seme papyrus shirt up skeleton skeletons small sub small sub big dom smaller penetrated smaller sub smaller sub bigger dom spread legs tears tongue tongue out top papyrus uke sans undead undertale undertale (series) video games yaoi