Xbooru - 1boy 2010s 2015 animated skeleton artist name blue blush blue penis blue tongue blush bodily fluids bondage bottom sans chair clothed clothing cum cussing ectopenis ectotongue english text fluids formal formal clothes formal wear hand hand on crotch male male focus malesub monster neck tie necktie office chair partially colored penis penis out penis through fly profanity sans sans (undertale) sitting sitting on chair skeleton solo focus submissive submissive male swearing sweat text tied up tomorobo tongue tongue out uke sans unbuttoned unbuttoned shirt undead undertale undertale (series) undertale fanfiction vest white background