Xbooru - 2010s 2018 2boys 2d 2d (artwork) animated skeleton blue penis bottom sans bottomless cum digital media (artwork) drooling duo ectopenis flowans flower flowey the flower gay grin jerking off ladybumtickler male male/male male only monster penis plant sans sans (undertale) seme flowey skeleton smile sniggysmut tentacle tentacle around penis tentacle on male tentacles around ankles tentacles around arms tentacles around legs tentacles on male text top flowey uke sans undead undertale undertale (series) video game character video games vine tentacles vines white background yaoi yellow flower