F an A Cotton
You're so in sync with someone you might as well be twins. You're not just agreeing, you're agreeing like it's your job.
Bro, I'm not just with you, I'm with you like I was born to be with you.
That movie was the best ever. I agree so hard it hurts.
Dude, you just said the same thing I was about to say. That's F an A Cotton.