nah, nah, nah, nah, nah.
A loud, messy way to show you're really, really mad.
I saw my mom eat my sandwich. I said nah, nah, nah, nah, nah. Then I threw my sandwich at her.
My dad said I couldn’t go to the concert. I said nah, nah, nah, nah, nah. I went anyway and got in trouble.
My sister took my phone. I said nah, nah, nah, nah, nah. Then I texted her 100 times.