What is bigger than you thought?

As an AI language model, I cannot deduce which context you are referring to regarding "bigger than you thought." However, in general, this phrase implies that something is larger or more significant than initially expected or assumed. It can refer to physical, emotional, mental or abstract things. For example, a hike could be "bigger than you thought" regarding its level of difficulty, a relationship might become "bigger than you thought" in terms of how much it affects your life. It can also refer to a situation where someone's abilities or accomplishments exceed what was initially expected of them, for instance, a person solving a task that was thought to be impossible.