No, not Double-Dutch, and not quite Bungee jumping. The kids these days and their fads- EnglishRussia has an interesting series of pictures of the group rope-jumping craze sweeping the country.
As illustrated above, a group simultaneously jumps from a bridge (as a train bears down on them), clinging to ropes that swing them up towards the other side. No details on what kind of injuries this involves, but the line tangles don't look encouraging.
Link
Update: actually it did - I don't know what happened there at first ...