how to have an argument with yourself and win, i think

You: Hey look at that.
The 4 Year Old: Hey look at that.
You: Why are you copycatting me?
The 4 Year Old: Why are you copycatting me?
You: Cause I’m crazy.
The 4 Year Old: Cause I’m crazy.
You: I know you are.
The 4 Year Old: I know you are.
You: No, you are.
The 4 Year Old: No, you are.
You: No, YOU are!
The 4 Year Old: No, YOU are!
You: NO, YOU ARE!!!!!!!!!

And tickles ensue and thus victory even though all the while you’ve been calling yourself crazy.