The idiom "couldn’t care less" means to be completely uninterested or indifferent towards something. It is a strong expression of disinterest, indicating that the speaker could not care less about the topic at hand.

The idiom "get the wrong end of the stick" means to misunderstand or misinterpret a situation or someone's intentions, usually resulting in negative consequences.

The idiom "all up" means to gather, collect, or assemble everything needed for a task or activity. It can also mean to have a total amount of something or to sum up the results of an endeavor.

The idiom "belly up" means to face a difficult situation head-on, to confront a problem directly, or to give up or fail in an attempt. It can also refer to being killed or dying in battle.

"What are you up to?" is an idiomatic expression used to ask someone about their plans, activities, or intentions for the near future. It can also be used to express curiosity or concern about someone's actions or motivations.