elastics
n.— «Elastics was mostly a girl-thang… but it’s where you have a large loop of elastic and put it round the ankles of two ppl and they stand apart a bit. Then ppl would take turns jumping on it, in it, outside it… there was a routine I’m told! And the elastic would gradually get moved higher.» —“Two-Day Holiday Weekend” by James Noble The Musings of Kev July 5, 2004. (source: Double-Tongued Dictionary)