Why do people keep adding this to their comments? Are they checking notes? Why do they feel the need to point it out if they are? Why are they saying they are if they aren’t? It’s like me adding “scratching head” to my comment, which I just did, but I have no idea why that adds anything to the conversation.
It’s a joke. They are pretending they can’t remember the very obvious/absurd/silly/etc thing, so they have to check their notes before finishing the thought.
I think it might have its origin in courtroom dramas having prosecutors being catty with the defense but that’s just a barely informed guess tbh