In chat, "BS" typically means nonsense or something untrue, and it's an abbreviation for "bullshit."
Essentially, when someone says something is "BS," they are expressing disbelief or suggesting that the statement is false, exaggerated, or otherwise misleading. It's a relatively informal and sometimes offensive term, so consider your audience before using it.
For example:
- "That excuse is total BS!" (Meaning: That excuse is completely unbelievable.)
- "Don't give me that BS." (Meaning: Don't try to deceive me.)
It is worth noting that while "BS" almost always implies deception or untruth, its intensity can vary depending on the context and tone of voice (if spoken). In some instances, it can be used playfully or humorously between friends, while in other situations it can be quite confrontational.