Xbooru - 2010s 2017 2boys animated skeleton blue blush blush boots bottom sans brother/brother brothers clothed clothing comic sans couch duo english text fontcest gay grabbing leg grope grope from behind groping groping from behind hand in pants hand under clothes imminent sex incest indoors male male/male monochrome monster one eye closed orange blush pants papyrus papyrus (font) papyrus (undertale) papysans partially colored sans sans (undertale) seme papyrus shirt shirt up sitting sitting on couch sitting on sofa skeleton sofa sweat text top papyrus touching crotch uke sans undead undertale undertale (series) unknown artist yaoi