What joke is the countdown to North Korea's nuclear weapons?

Those who have never seen North Korea seem to remember ... country A: I want to test nuclear weapons on your border! Country B: Yes! About when? Country A: 5 B: five days later? Country A: 4 B: 4 hours? Country A: 3...2 ... Country B: ... Fuck you, uncle ... (I don't remember what it means, it's probably here ... Didn't I give you some hard work ... I thought about it myself and played) ~ ~!