This is super common though. I mix up my kids’ names on a daily basis, it’s not because I don’t know who they are or can’t tell them apart. They do think it’s hilarious when I mix them up with the chickens.
The common factor is that I am usually saying the same mindless stuff to my kids (and chickens), like “get down from there” or “move out of the way please” or “stop making so much noise”.