Originally Posted by unquiet
There are lots of things you can hit from north south. Just depends what the guy is giving you. If you're going to armbar from n/s, you need to have one, preferably both arms wrapped up.
You can get a "whose your daddy" and trap their arm too.
Whose Yo Daddy is a great position. That is one of my best weapons, and it's very effective against larger/stronger opponents.
You can transition to it very easily from an armbar attempt in mount. The defense to the armbar is for them to trap their arm, to prevent you from extending it. That allows you to reach behind their head and grab their wrist.
Very quick, very easy, and it takes advantage of "correct" behavior on their part. They aren't doing anything wrong, but it works to your advantage regardless.