I was born in 1981 in Serbia, and elastics was a very popular game there from the early 60s until mid 90s. There were different versions, one where an elastic hoop is placed between two gills standing opposite each other, around the legs, and the other one where it was held by fingers, first 4, than reduced to 3,2 and one finger, between two girls and the third one had to jump through it in a rhythm of a chant. There was a chant about the popular American show Dynasty.