staple manoeuvre

A form of relationship in which the female is being penetrated by two men who are also friends.
The crown (top bar) of the staple represents the friendship between the two males and the legs of the staple represents their penises. It is called the staple manoeuvre because the manor in which a staple is inserted into paper (both ends of the staple enter at the same time) is reflecting the way that the two males penetrate to woman at the same time.