I often see What does the sofa mean? in the replies to posts.

In the past, there were a lot of quarrels, and if there was a dispute, many people expressed concern, but they only paid attention and did not participate, so they moved to the sofa and watched.

Later, it became popular, and the person who grabbed the first one was the comfortable sofa, the bench in the back, and the person in the back was gone.

The first person to reply was the sofa.

There are benches, floors, etc. below.

I'm the couch now.

The first reply.

day, a few more words to change the floor.

The first person to reply.

I don't think the word is very good and prone to ambiguity.