Fanatic--
As disgusting as the cheerleader put it, she was right. Guys do this when they are put in precarious situations to make the opponent uncomfortable. For example, I have seen a defensive wrestler do this when the offensive wrestler is extended on a single leg takedown to get him to release the leg. It is also done when you set the arm in to switch and you are trying to pull yourself up behind the other wrestler. Maybe others can help out with examples...I try to stay away from that as much as possible.