The #jackchallenge is often used to tell people they should try to be a nonce. Jack was once a friend on discord but he turned out to be a pedophile. Another way to say it is just "do the jack".
How to do the #jackchallenge: Lucie: Hi Jack

Jack: Hi Lucie how old are you?

Lucie: I'm 9 and you?

Jack: If you're 9 I'm 9 ;)
by nocloutsadly May 16, 2020
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