It means the context is giving you different clues or hints in order to understand the meaning, but it is not actually stated.
For instance, let's say you are talking to your friend, but he is not really looking at you in the eye, he is constantly yawning and he is also checking his watch. What is the implied meaning here? He is bored. However, he does not say anything, you just imply it out of his behavior.
Implied is something that is not directly indicated, but is suggested. When you eat a meal that you do not like and make a gesture of disgust, it is an example of a situation in which your disgust is implied, even if you do not say it.
Grendel is a 1971 novel by American author John Gardner. It is a retelling of part of the Old English poem Beowulf from the perspective of the antagonist, Grendel.
The line "Happy thoughts come to those with baked goods and fat cats." means that the reasons behind having happy thoughts include baked goods and fat cats. Maybe the person who said this loves cats and cookies, cakes, and pastries. <span />
