If you are trying to make a strong impression on your audience, you cannot do so by being understated, tentative or restrained. The passage is about a jackal that falls in blue paint and convinces other animals it is the king by using hyperbolic statements. However, the other animals start to become indifferent to its tall stories. One day it hears other jackals and reveals its true nature by crying out, unable to restrain itself. To make a strong impression, one needs to avoid being understated, tentative or restrained in their communication.