nah nah bitch
Nah nah bitch is a stupid way to say goodbye that sounds like a joke but is actually just mean and loud.
Person 1: I'm outta here. Person 2: Nah nah bitch. Person 1: What even is that?
Person 1: I'm going to sleep. Person 2: Nah nah bitch. Person 1: I'm not even mad.
Person 1: I'm leaving. Person 2: Nah nah bitch. Person 1: You're the worst.