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A motocross term that cool kids stole to sound fancy. You can use it instead of knock-knock in jokes or say it when you’re being extra. If your name isn’t Kelsey, Kylie, Momo, Kristen, or Josh, you’re dead meat.
Nac nac, why’d you eat my last slice of pizza?
Nac nac, you’re the worst friend ever.
Nac nac, I’m gonna fail this test because of you.