A variant on standard posting which would involve grabbing your victim's legs (boys only) while they were astride some section of climbing frame. You would then recruit as much help as possible (sometimes three pullers to one leg) and pull the victims legs towards you and hence crush his genitals against the climbing frame. The net result of all of this was that the boys never went on the climbing frames. This meant that the girls couldn't either because all of the boys would look up their skirts. As a result only minging boggers went on them.