Nagalai - A lazy, slurred way of saying 'not gonna lie' like you're to

A lazy, slurred way of saying 'not gonna lie' like you're too tired to even speak clearly.

Nagalai, I stayed up until 3 AM and I still didn't finish my homework.

Nagalai, I just got yelled at by my mom and I'm still eating pizza.

Nagalai, I just texted my crush and I'm still happy.