Square Dancing Call?

Question:

Square Dancing Call?

Good evening everyone. There is a certain call in sqaure dancing that I want to know the name of and was hoping one of you could tell me what the call is called. I know that it is 4 words long and that it means something like, "when the men move to one side and the women move to the other side." I will give 10 points to the person who can give this answer to me and/or the first person.

P.S. I think that people call it the hardest call to learn in square dancing.

Thank you.

Best Answer - Chosen by Asker: The source is a really neat site that animates several dozen square dance calls. I went through it to review my memory, paying particular attention to longer names. As I remembered, NONE of the calls show men on one side and women on the other, things are always done as couples.
You may be thinking of contra dancing, which DOES involve men on one side and women on the other and which is often mixed with square dancing in certain areas (look in Wikipedia square dance for info on this.) One of the more complicated moves in contra involves the top couple swinging each other, then the couple below, then each other, then the next couple, progressing down the set.
Country dance, which also is done in lines of men and women, but with more than 8 people in a group also has complicated moves.