«زَيِّ طَبْلْ نِشْوَهْ مَجْعُورْ وِمْلَاحِقْ عَلَى زَفِّتِينْ»

The picture is a drum identified with Nishwa, a village, with a hole in it, already damaged, yet still carted from one wedding procession straight on to the next. Asking a defective instrument to serve two celebrations in a row turns the scene into a joke about overloading something that is already unfit.

Said of a person, it mocks someone who is not up to handling even one job yet tries to manage two together. The jab is that doubling the load does not hide the shortcoming; it simply puts that shortcoming on display twice over.

Apply it to someone who is struggling with one responsibility and nevertheless adds a second, for instance a person attempting two roles while managing neither properly. The tone is mocking, so it suits teasing or pointed criticism rather than polite or formal remarks.