The phrase "arse about" is a slang term that means to waste time or to be lazy. It is often used in informal contexts, particularly in British English. When someone is "arsing about," they are not doing anything productive; instead, they are just idling or goofing off.
In more advanced usage, "arse about" can also imply a sense of frustration with someone's lack of motivation or seriousness. For example: - "I don't have time for you to just arse about; we need to finish this project!"
While "arse about" primarily means to waste time, it can also imply a lack of focus or seriousness in a situation.
"Arse about" is an informal way of saying someone is being lazy or wasting time.