We called them bendy trees. When we were kids our playground was “the woods”. We would climb up in the young trees and traverse the woods from one end to the other like monkeys and had a couple of spots where we could even cross the creek via the bendy trees. Went back a few years ago and over 50 years since. Now there’s a paved “greenway” for walking and joggers and fancy bridges across the creek, a neighborhood where there used to not be one encroaching on “the woods”.... and the bendy trees don’t bend so much anymore. Haha! They are huge!
Robert Frost wrote a poem about that game, lamenting its replacement with baseball in his day.