The ritual is done at least 20 times, with months or years between each session, taking 10 to 30 minutes. The ones that pass through it all are accepted as warriors and future leaders

https://pib.socioambiental.org/en/Povo:Sater%C3%A9_Maw%C3%A9

https://en.wikipedia.org/wiki/Maw%C3%A9_people

https://en.wikipedia.org/wiki/Paraponera_clavata (bullet ant)