gelbooruhttps://xbooru.com/index.php?page=atom&tags=2018 2boys 2d 2d (artwork) 2d animation alternate universe anal anal insertion anal sex animated animated skeleton arnachy ass ass grab backsack ballsack begging big ass big butt black gloves black hoodie black sclera blush bondage bone bottom sans brother and brother brothers butt collar digital media (artwork) drooling ectobody ectobutt english text everydaysins fellcest femboy feminine male fontcest gay geeflakes gloves grabbing ass hand on butt hoodie hoodie only improvised dildo improvised sex toy incest latex gloves male male focus male penetrated monster papyrus papyrus (underfell) papyrus au papysans red ass red blush red body red eyes sans sans (underfell) sans au seme papyrus skeleton socks solo focus spiked collar sweating testicles text tongue tongue out top papyrus toy tumblr tumblr username uke sans undead underfell undertale au url video games white socks2024-06-16T00:51:57Zgelbooru