Passive pink creatures that spend their days wandering around and blowing bubbles. They spawn in groups. If you find one you can right-click it and it will go on your head. Right-click again to throw it. If you throw it at a DigBug the DigBug will digest the Bubblescum and turn it into a shower of cookies which can then be used to tame RocketGiraffes. If Bubblescums are dropped from a high ledge then the player will earn achievements.