Xbooru - 2020s 2021 animated skeleton big cock big dom big dom small sub big penis bigger dom bigger dom smaller sub bigger male bottom sans bottomless male brother brother/brother brother and brother brothers clothed/nude clothed male commission commission art completely naked completely nude crying crying with eyes open duo ectopenis fontcest from behind gloves gradient background grey background incest larger male male male/male male only naked non-con non-consensual noncon nonconsensual nsfwgarbagedump nude orange penis papyrus papyrus (undertale) papysans partially clothed partially clothed male penis red gloves sans sans (undertale) seme papyrus skeleton small sub small sub big dom smaller sub smaller sub bigger dom tears top papyrus uke sans undead undertale undertale (series) veiny penis yaoi