Rule34https://rule34.xxx/index.php?page=atom&tags=2018 2boys 2d alternate universe anal anal insertion anal play anal prodding anal sex animated animated skeleton ass ass grab backsack ballsack begging big ass big butt black gloves black hoodie black sclera blush bondage bone brother and brother brothers butt collar dead source dildo drooling ectobody ectobutt english text everydaysins femboy feminine male gay gif gloves grabbing ass hand on butt hoodie hoodie only humanoid improvised dildo improvised sex toy incest latex gloves male male focus male penetrated monster papyrus papyrus (underfell) papyrus au rape red ass red blush red body red eyes sans sans (underfell) sans au sex toy skeleton socks solo focus spiked collar sweating talking testicles text tongue tongue out tumblr username undead underfell underfell papyrus underfell sans undertale (series) undertale au undertale fanfiction url white socks2024-04-29T01:37:48ZRule34