Xbooru - 1:1 1:1 aspect ratio 2010s 2boys 2d 2d (artwork) animated skeleton blue blush blush bone bottom sans bottomless digital media (artwork) duo eli-sin-g english text flowans flower flowey the flower flowsans kolesjoie legs apart legs spread looking at another looking at each other male male/male male only mouth forced open plant plant tentacle plant tentacles sans sans (undertale) seme flowey simple background skeleton spread legs tentacle tentacle around leg tentacle in mouth tentacle under clothes tentacles around arms tentacles around wrists tentacles in mouth tentacles under clothes text top flowey tumblr uke sans undertale undertale (series) video game character video games vine tentacles vines white background yaoi