Xbooru - 2010s 2016 2boys 2d 2d (artwork) 2males ahoge animated skeleton artist request blue blush blue penis blush bottom sans crying digital media (artwork) ectopenis english text gay genitals hair hair over one eye handjob hooded jacket hoodie hugging pillow humanoid humanoid robot jacket male male/male male only mettasans mettaton mettaton ex monster partially colored penis pink blush robot robot boy robot humanoid sans sans (undertale) skeleton sketch sweat tears text trembling uke sans undead undertale undertale (series) video game character video games white background yaoi