I guess everybody knows how annoying it is when you forget something. Especially if it's something as important as... how often can this "es"thetic sound appear in one sentence?|
The third panel is probably a bit nasty when you just look at the brighter parts and think of this very word mentioned twice in the second panel. And when talking of this: Can it be a coincidence that the content of the boxes includes this particular sound? And that this content is in a certain way ambiguous? There are some things you better hide, especially when you're a mafioso... as him.