樹突

树 = 对 + 木 : Sheldon Shrimp cultivates a Christmas tree in the space station's bathroom. He is very happy that he found the right tree, just the one he imagined, and—in his mind—marks of the tree he imagined with a big green check mark.

突 = 犬 + 穴 : Tommy Turtle (tu) is painting cave paintings (穴) onto the saint bernard dog (犬) while he is sleeping in front of the space station (Ø1), but suddenly (突) the saint bernard dog wakes up and dashes (突) at Tommy Turtle after he quickly finds out what Tommy did to him.