短歌

短 = 矢 + 豆 : Doggy Dog (du) is playing darts (矢) with some buddies inside of the anthill (an3). He ate a bunch of beans (豆) before, so every time he throws a dart (矢), he has to go to the bathroom for a short duration (短) to fart.

歌 = 哥 + 欠 : Guy Fawkes (g) lost a bet to his elder brother (哥) Godzilla (哥), who is waving with the IOU (欠) note Guy Fawkes signed when they made that bet. Now he'll have to sing a song (歌) to Godzilla in front of the elevator (e1).