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Boong-Ga Boong-Ga rule
(sh.itjust.works)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
As a Swiss young adult, kids in our middle school did that all the time.
Here in the US, I first learned about this from a Japanese exchange student. We quickly told him not to try it. Dude would have gotten his ass kicked by whomever he poked.
Hahhaha yeah.
It’s was very localised to pre-teen middle schoolers in my generation. Once people hit puberty that shit would not fly (no pun intended).