What are the things that stick at the bottom?

The things that stick at the bottom can vary depending on the context. In a physical sense, it may refer to sediment or debris that settles at the bottom of a liquid, like mud in a pond. In a metaphorical sense, it can represent unresolved issues or lingering emotions that weigh heavily on someone's mind. Ultimately, what "sticks" is often a reflection of accumulation or neglect over time.