短信

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.

信 = 亻 + 言 : Marie Curie and Rosa Luxemburg are reading a letter of Karl Marx to the public in the encampment's bathroom. To make the message really come across to the people they use a megaphone.